Magnesium Products

Company Profile

Set in the year of 2003, Henghao Technology Development (Hangzhou) Co., Ltd.'s predecessor is Hangzhou Henghao Pigment Co. The company's headquarters has two divisions: Henghao Pigment & Henghao Powder which has independent R&D lab and production bases. We have been doing lots of researches & developments with major domestic universities together, and keeping the latest technology and market competitiveness advantages.

Why Choose Us

Our company

Henghao technology development (hangzhou) co., ltd. Was established in 2003, headquartered in pigment and powder division, with independent r&d laboratories and production bases, and joint research and development with universities, always mastering cutting-edge technology and maintaining market competitive advantage.

Product applications

The products are used in plastics, inks, coatings and other fields, covering organic pigments such as azo and lakes, inorganic pigments such as lead and chromium, fluorescent pigments, etc., as well as non-metallic material powders such as magnesium hydroxide.

Our certificates

The products pay attention to safety, implement cleaner production, energy conservation and emission reduction, strictly control heavy metals and toxic substances, and can provide sgs reports and msds.

Quality control

The quality control system is perfect, from raw materials to finished products are systematically tested according to the application method, raw material testing and production process control are carried out in the factory, and the test is applied again in an independent laboratory before delivery, and double inspection ensures product quality.

Magnesium Hydroxide

What Is Magnesium Hydroxide

Magnesium Hydroxide, commonly known under trade names like Milk of Magnesia, is a widely-used over-the-counter medication primarily recognized for its role as an antacid and laxative. This compound has been a staple in medicine cabinets for decades, providing relief for various gastrointestinal issues. The primary target of Magnesium Hydroxide is to neutralize stomach acid and alleviate symptoms of indigestion, heartburn, and upset stomach. It is also employed to relieve occasional constipation by drawing water into the intestines, which stimulates bowel movements.

Advantages of Magnesium Hydroxide

May help treat headaches
Magnesium is needed for proper nerve cell functioning. As such, a deficiency in this mineral can lead to migraine headaches.Studies show that magnesium oxide may reduce headache symptoms. It may even be as effective as some migraine headache medications.

May reduce stress and anxiety
Magnesium plays an important role in your body’s stress response. In fact, studies have shown that people who experience frequent stress tend to have lower magnesium stores (17trusted source).Some studies have shown that supplementing with magnesium may help reduce levels of stress and anxiety in certain populations.

Helps treat constipation
One of the most common uses of magnesium oxide supplements is constipation treatment. The supplement has an osmotic effect, meaning it draws water into the intestines to cause a laxative effect that can help relieve constipation in both children and adults.

May lower blood pressure
Magnesium oxide supplements may help reduce elevated blood pressure levels.

May lower blood sugar levels
Magnesium supplements may lower blood sugar levels in people with diabetes.For example, supplements containing magnesium oxide and zinc have been shown to lower blood sugar levels in people with type 1 diabetes, type 2 diabetes, and gestational diabetes, which is diabetes that can occur during pregnancy (24trusted source).

Production Methods of Magnesium Hydroxide

Brine-ammonia water one-pot synthesis

Use brine/bittern and ammonia water as raw materials, prepare magnesium hydroxide through further synthesis, filtration and drying.The brine block is dissolved in water, the refined mother liquor is poured into the reaction kettle, the water is adjusted to the required concentration and then heated to 50-70°c for 1-2h. After adding the ammonia water surfactant, the reaction temperature is increased to 80-90°c, and after constant temperature treatment for 2-3 hours, the material is discharged, filtered, dried and pulverized to obtain magnesium hydroxide powder.The method of brine-ammonia water one-pot synthesis completes the precipitation reaction, hydrothermal treatment, and surface treatment in one step. The reaction temperature is controlled below 100°c throughout the process, saving high-pressure reactors, shortening the process flow, less equipment, low operating costs, and low production costs.

Magnesite calcination

Calcined magnesite to produce magnesium oxide, along with hydrochloric acid to produce magnesium chloride, and then react with ammonia water to produce magnesium hydroxide.
Put the magnesite ore (magnesium carbonate content＞94%) and anthracite or coke in a shaft kiln to calcine, generate magnesium oxide and carbon dioxide. After passing through a 120-mesh sieve, the magnesite is placed in a reaction kettle, mixed with water in a certain proportion to make a slurry, stirred evenly, heated to above 90°c, and slowly added with a certain concentration of industrial hydrochloric acid. After the reaction, it was added to synthesis kettle with a certain concentration of ammonia water for metathesis reaction to produce new basic magnesium chloride. The subsequent steps of preparing magnesium hydroxide from new basic magnesium chloride and surface treatment are the same as brine-lime method.The magnesium hydroxide content of the products obtained by using magnesite as raw material is above 95%, the crystal form is neat, and the dispersibility is good.

Dolomite calcination

Firstly, dolomite is calcined, digested and carbonized. Then calcium carbonate is removed to obtain magnesium bicarbonate, which is reacted with ammonia water to synthesize magnesium hydroxide. After surface treatment, filtration and drying to get magnesium hydroxide powder.

Brucite crushing method

After being selected, the natural brucite is directly ground to the required fineness and surface treatment can be carried out if needed. The method is simple and low in cost, but the product purity depends on the quality of natural brucite ore.

Magnesium Hydroxide Mechanism of Action

The mechanism of action for Magnesium Hydroxide is relatively straightforward yet highly effective. As an antacid, it works by neutralizing stomach acid through a simple chemical reaction. When Magnesium Hydroxide comes into contact with hydrochloric acid in the stomach, it reacts to form magnesium chloride and water. This reaction not only neutralizes the acid but also raises the pH of the stomach contents, providing relief from the burning sensation associated with heartburn and indigestion.

As a laxative, Magnesium Hydroxide operates through a different mechanism. It acts as an osmotic agent, which means it draws water into the intestines from the surrounding tissues. This influx of water softens the stool and increases its bulk, making it easier to pass. The increased water content also stimulates intestinal motility, helping to move the stool through the digestive tract more efficiently. This dual-action mechanism—neutralizing stomach acid and drawing water into the intestines—makes Magnesium Hydroxide a highly effective remedy for a range of digestive issues.

How to Use Magnesium Hydroxide

Magnesium Hydroxide is available in various forms, including liquid suspensions, chewable tablets, and capsules. The method of administration can vary depending on the condition being treated. For antacid purposes, the liquid suspension is often preferred for its rapid onset of action. Typically, a dose of 5-15 milliliters is taken with water, and relief from heartburn or indigestion can be expected within 30 minutes to an hour. For treating constipation, the dosage may be higher, usually around 15-30 milliliters, and it should be taken with a full glass of water to facilitate the laxative effect. The onset for constipation relief is generally within 6 to 12 hours.

It is crucial to follow the dosage instructions provided on the packaging or by a healthcare professional. Overuse or incorrect use can lead to complications, such as electrolyte imbalances or dehydration. Additionally, Magnesium Hydroxide should not be taken for more than seven days consecutively without medical advice. Long-term use may mask underlying conditions that require medical attention. For those using chewable tablets, it is essential to chew them thoroughly before swallowing to ensure proper efficacy. Additionally, it is advisable to take Magnesium Hydroxide on an empty stomach for faster relief, although it can be taken with food to minimize gastrointestinal discomfort.

What special precautions should I follow

Before taking magnesium hydroxide

Tell your doctor and pharmacist if you are allergic to magnesium hydroxide, any other medications, or any of the ingredients in magnesium hydroxide preparations. Ask your pharmacist or check the product label for a list of the ingredients.
Tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
If you are taking other medications, take them at least 2 hours before or 2 hours after taking magnesium hydroxide.
Tell your doctor if you have stomach pain, nausea, vomiting, or a sudden change of bowel habits lasting more than 2 weeks. Also, tell your doctor if you have or have ever had kidney disease.
Tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking magnesium hydroxide, call your doctor.

What should I do if I forget a dose?

Tell your doctor if you are on a magnesium-restricted diet before taking magnesium hydroxide. Unless your doctor tells you otherwise, continue your normal diet.

What side effects can this medication cause?

Magnesium hydroxide may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
loose, watery, or more frequent stools
Some side effects can be serious. If you experience any of these symptoms, stop taking magnesium hydroxide and call your doctor immediately:
Blood in stool
Unable to have a bowel movement 6 hours after use
Magnesium hydroxide may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

Fused Magnesite

What Is Fused Magnesite

A high-purity magnesia brick is a general term for products in which magnesium materials such as magnesite are treated at a high temperature to a degree of sintering. Using a high-temperature equipment such as a shaft kiln or a rotary kiln for one-time calcination or two-step calcination, the magnesite fired from natural magnesite is called sintered magnesia; the magnesite is used as a raw material to be cooled by melting in an electric arc furnace. The latter formed is called fused magnesia; the seawater magnesia is made by extracting magnesium oxide from seawater. Magnesia is one of the most important raw materials for refractory materials, and is used to manufacture various kinds of magnesia bricks, magnesia-aluminum bricks, ramming materials, and charging materials. It contains more impurities and is used for paving steelmaking furnace bottoms.

Advantages of Fused Magnesite

High temperature resistance
One of the primary advantages of fused magnesia chrome is its remarkable resistance to high temperatures. It can withstand temperatures exceeding 1700°c (3092°f) without significant structural degradation. This property makes it ideal for use in environments with extreme heat, such as steelmaking, non-ferrous metal production, cement manufacturing, and glassmaking.

Corrosion and chemical resistance
Fused magnesia chrome exhibits exceptional resistance to chemical attack and corrosion. It can withstand contact with acidic slags, basic slags, molten metals, and various corrosive gases encountered in industrial processes. This resistance to chemical degradation ensures the longevity and reliability of fused magnesia chrome in harsh operating conditions.

Mechanical strength and abrasion resistance
Fused magnesia chrome possesses excellent mechanical strength and resistance to abrasion. It can withstand mechanical stress, such as thermal cycling, mechanical impact, and load-bearing applications. This property makes it suitable for use in furnaces, kilns, ladles, and other equipment subjected to frequent thermal and mechanical shocks. You can also click this link: Https://keruico.Com/silica-bricks-price/

Low porosity
Fused magnesia chrome exhibits low porosity, which limits the penetration of liquids or gases into its structure. This property enhances its resistance to thermal spalling, reduces the risk of corrosion, and improves overall performance and durability. The low porosity of fused magnesia chrome contributes to its longevity in high-temperature environments.

Production Methods of Fused Magnesite

Raw material selection

The process begins with the careful selection of high-quality magnesite, which serves as the primary raw material. Magnesite with low impurity levels is preferred to ensure the final product's purity and consistency.

Calcination

The selected magnesite is subjected to calcination, a process that involves heating the mineral in a controlled environment. This step removes any moisture and carbon dioxide present in the magnesite, leaving behind a more concentrated form of magnesia.

Fusion

The calcined magnesite is then fused at extremely high temperatures, typically exceeding 2,800 degrees celsius, in electric arc furnaces. This intense heat causes the magnesite to melt, forming a molten mass.

Cooling and solidification

The molten magnesia is carefully cooled to allow solidification. The cooling process influences the crystal structure of the fused magnesia, affecting its final properties.

Crushing and sizing

The solidified fused magnesia is crushed into various particle sizes to meet the specific requirements of different applications. This step ensures the availability of a range of fused magnesia grades tailored for diverse industries.

Quality control

Throughout the manufacturing process, rigorous quality control measures are implemented to maintain the desired composition and physical properties of the fused magnesia. Advanced analytical techniques and testing procedures are employed to ensure consistent quality and purity.

Function of Fused Magnesite

Refractories
Fused magnesia serves as a fundamental component in refractory materials, which are widely used in high-temperature environments. Its excellent resistance to heat, corrosion, and thermal shock make it a preferred choice for lining furnaces, kilns, and other equipment used in industries such as steel, cement, and glass manufacturing.

Metallurgy
The steel and metallurgical industries heavily rely on fused magnesia for various applications. It is utilized in the production of refractory bricks, ladle linings, and crucibles, providing crucial protection against the extreme conditions encountered during metal melting, casting, and refining processes.

Electrical Industry

In the electrical industry, fused magnesia is utilized in the manufacturing of electrical insulation materials. Its high electrical resistivity and thermal stability make it an excellent choice for insulation components in electrical heating elements, such as those used in electric furnaces and industrial heating systems.

Chemical Industry

Due to its resistance to chemical corrosion, fused magnesia plays a vital role in the chemical industry. It is used for lining reaction vessels, storage tanks, and chimneys, where it protects against the corrosive effects of acids, alkalis, and other reactive chemicals.

Other Applications

Apart from the industries mentioned above, fused magnesia finds utility in various other sectors. It is utilized in the production of ceramics, abrasives, grinding wheels, and specialized coatings. Its versatility and superior properties make it a valuable material in a wide range of applications.

What Is the Difference Between Fused Magnesia and Large Crystalline Fused Magnesia

The fused magnesia is produced by melting magnesite in the electric arc furnace with a content of 47 or more. The chemical index of fused magnesia can be divided into 6 items. (1) the content of magnesium oxide; (b) Silicon dioxide content; 3. Iron oxide content; 4. Content of aluminium trioxide; 5. Caustic soda; 6. Confidentiality; Fused magnesia products have high purity and large crystallite size, Compact structure, strong slag resistance, good thermal shock stability, is an excellent high temperature electrical insulation material, and also an important raw material for making high-grade magnesia brick, magnesia-carbon brick and unshaped refractories.

Main Features of Fused Magnesia Products: Fused Magnesia Products Features: Intact Structure, Dense Structure, High Melting Point ( up to 2800℃), Stable Chemical Properties and Great Compressive Strength, It is an important raw material for metallurgy, building materials, light industry, furnace lining and bulk material, and also an indispensable refractory in iron and steel, cement, glass, nonferrous metal smelting and so on.

Main Applications of Fused Magnesia: Fused Magnesia Sand can be mainly used as Shotcrete, Ramming and other Auxiliary Refractories and Special Refractory Bricks such as Flowing Steel Mouth Bricks, Magnesia Bricks, Magnesia-Chrome Bricks, It can also be used as refractory lining in vacuum and non-vacuum induction furnace and electric arc furnace. It is an ideal material for making magnesia crucible, furnace tank and various high temperature casings. 　

Production Process of Large Crystallized Electric Melting Magnesia: Large Crystallized Electric Melting Magnesia is produced by melting 91-92 MgO and 0mm-3mm MgO particles in electric arc furnace. The product has high purity, large crystal grains and dense structure, High slag resistance, good thermal shock stability, is an excellent high-temperature electrical insulation material, and also an important raw material for making high-grade magnesia bricks, magnesia-carbon bricks and unshaped refractories. Widely used in metallurgy, chemical industry, national defense, scientific research, aerospace, household electrical components and so on.

High purity, large melting point and high density of crystallized magnesia products. The thermal shock stability is good. Good high temperature bending strength; It has good slag resistance and corrosion resistance. Strong thermal conductivity and high insulation.

Application of Large Crystallized Electric Melting Magnesia Products: Large Crystallized Electric Melting Magnesia is used in the furnace lining of steelmaking furnace, and it is a high quality basic refractory material for making refractory bricks and unshaped refractories. They can also be used as fillers for making thermocouples and thermal insulation materials (household appliances, etc.); Also can be used for ceramic raw materials and sintering auxiliaries as well as metallurgy, building materials, chemical industry, national defence, medical apparatus, etc.

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FAQ

Q: Is magnesium hydroxide a strong base?

A: No. Magnesium hydroxide has a low solubility in water, which makes it a weak base. The amount of magnesium hydroxide dissolved will completely separate into magnesium and hydroxyl ions (Mg2+ and OH-). Therefore, however weak it may be as a base, magnesium hydroxide is considered a strong and potent electrolyte due to this complete dissociation of ions.

Q: Is magnesium hydroxide an alkali?

A: Magnesium hydroxide contains one magnesium ion bound to two hydroxyl ions. However, it is a peculiarly weak alkali since it does not dissolve completely in water. However, whatever is dissolved makes a strongly basic solution, as it completely dissociates into positively-charged magnesium and negatively-charged hydroxyl ions: Mg2+ and OH-.

Q: What is magnesium hydroxide in deodorant?

A: Magnesium hydroxide is used as an ingredient in deodorants. The main reason for its use is its ability to kill odor-causing bacteria on the skin while causing no damage to the dermis. The dermis is the outermost layer of the skin comprising sweat glands, hair follicles, and pores.

Q: Is magnesium hydroxide a salt?

A: Yes. Magnesium forms many salts with negatively charged ions, such as carbonate, citrate, sulfate, hydroxide, oxide, and trisilicate. Magnesium hydroxide, also known as milk or cream of magnesia, is one such salt of magnesium. Magnesium hydroxide is combined with aluminum hydroxide to make a laxative for treating constipation.

Q: How does magnesium hydroxide neutralize stomach acids?

A: Magnesium hydroxide neutralizes gastric acid in the stomach when used in antacids. Since it is insoluble in water, it does not cause any reaction until it reaches the hydrochloric acid present in the gastric juices. It combines with this stomach acid to form water and magnesium chloride, effectively reducing acidity.

Q: Is magnesium hydroxide harmful?

A: Overdose of magnesium hydroxide can cause nausea, vomiting, rectal bleeding, etc. When we ingest concentrated magnesium hydroxide, it acts as a strong irritant and can damage the skin, eyes, lungs, and stomach. Ingestion of high, concentrated, or long-term use of magnesium hydroxide can worsen your digestive issues instead.

Q: Will magnesium hydroxide help me sleep?

A: Several studies show that magnesium supplements can help regulate the sleep cycle and promote better sleep quality. Magnesium alleviates sleeping disorders like insomnia by reducing stress and elevating mood. It increases GABA, a neurochemical, which relaxes the mind and improves sleep. Therefore, magnesium hydroxide may help you achieve more peaceful sleep. However, consult your doctor if you’re consistently having trouble sleeping.

Q: When should I take magnesium hydroxide?

A: Magnesium hydroxide is taken to treat constipation and stomach-related problems. However, your doctor will be the one to decide your dosage depending upon your health condition. It is preferable to take magnesium hydroxide before bedtime, as it causes bowel movements within 30 minutes to 6 hours after consumption.

Q: Is magnesium hydroxide bad for the kidneys?

A: Excess magnesium levels in the body may cause kidney damage. Overdose or long-term use of magnesium hydroxide will elevate magnesium levels. People with proven excessive magnesium levels and those suffering from kidney dysfunction should avoid antacids, supplements, laxatives, or any other medication containing magnesium, as it may lead to magnesium toxicity.

Q: Is magnesium hydroxide a carcinogen?

A: There has been no research proving that magnesium hydroxide is a carcinogen. Therefore, it is completely safe to take magnesium hydroxide by mouth or apply it to the skin as antacids or topical ointments. There has been no record of cancer caused by magnesium hydroxide in humans to date.

Q: What is Magnesium hydroxide used for?

A: Magnesium hydroxide is used as a laxative for the relief of occasional constipation. Magnesium hydroxide is also used as an antacid to relieve indigestion, stomach acid, and heartburn.

Q: Is Magnesium hydroxide strong or weak?

A: All of the magnesium hydroxide dissolved dissolves into ions. Since the dissociation of this small amount of dissolved magnesium hydroxide is complete, magnesium hydroxide is considered to be a strong electrolyte. Its low solubility makes it a weak foundation.

Q: Is Magnesium hydroxide safe on the skin?

A: Concentrated sodium hydroxide, calcium hydroxide, magnesium hydroxide, and potassium hydroxide, when ingested, are strong irritants and corrosive to the skin, eyes, respiratory tract, and gastrointestinal system.

Q: Is Magnesium hydroxide the same as the milk of magnesia?

A: Magnesia milk is also known as magnesium hydroxide, its chemical name. Magnesia milk can be bought over the counter without a prescription. People should not give magnesia milk to children under 2 years of age unless advised by a doctor.

Q: When should I take Magnesium hydroxide?

A: It is usually taken as a single daily dose (preferably at bedtime) or can be divided into two or more parts over a single day. Magnesium hydroxide usually causes bowel movements within 30 minutes to 6 hours after taking it.

Q: Is Magnesium hydroxide an ionic compound?

A: Yes, magnesium hydroxide is an ionic compound. It consists of magnesium ions (Mg2+) and hydroxide ions (OH-) held together by ionic bonds.

Q: Does Magnesium hydroxide help you sleep?

A: Magnesium hydroxide is not specifically used as a sleep aid, but some believe it might help due to its muscle relaxation properties.

Q: What is the use of fused magnesite?

A: It can also be used as refractory lining in vacuum and non-vacuum induction furnaces and electric arc furnaces. It is an ideal raw material for making magnesia crucible, furnace gallbladder and various high temperature sleeves.

Q: What is magnesite good for?

A: White magnesite is known for its calming properties, helping to improve creative visualization and imagination. It is also commonly believed to bring deep peace and silent relaxation during meditation, stimulate passion in the heart and help strengthen bones and teeth.

Q: What is fused MgO?

A: Electro-fused magnesium oxide is used for insulating filler of tubular heating elements. To produce a tubular heating element, the coiled electric wire is inserted into the metal tube and the electro-fused magnesium oxide powder is filled into the inside gap.

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