The Magnesium Hydroxide Synthesis Method
Today we will introduce the Magnesium hydroxide synthesis method
Magnesium hydroxide synthesis method
1. A method of lime brine Will advance the purified brine refining processing and made of lime milk of lime treated by digestive slag in the sedimentation tank to carry on the precipitation reaction, adding flocculating agent in the slurry, after mixing, access to the settling tank for separation, then through filtration, washing, drying, crushing, magnesium hydroxide was finished.The reaction equations are as follows:
MgCl2+Ca(OH)2→CaCl2+Mg(OH)2
2. Brine - ammonia method With through purification treatment to remove impurities such as sulfate, carbon dioxide and a small amount of boron brine as raw materials, ammonia as precipitant for precipitation reaction in the reaction kettle, in front of the reaction in a certain amount of seed, fully mixing.And ammonia in the brine ratio is 1: (0.9 ~ 0.93), control the temperature of 40 ℃.
Adding flocculating agent after the end of reaction, sediment after filtering, washing, drying, crushing, magnesium hydroxide was finished.The reaction equations are as follows:
MgCl2+2NH3*H2O→Mg(OH)2+2NH4Cl
The test method to improve the yield, shorten the washing cycle, improve and perfect the production process.3. Ling magnesia magnesite stone with hydrochloric acid, ammonia method in shaft kiln calcining anthracite coal or cOKe, magnesium oxide and carbon dioxide.Magnesia powder into water slurry and regulations in the concentration of hydrochloric acid reaction after the preparation of magnesium chloride solution.The magnesium chloride solution with certain concentration of ammonia in the reactor for reaction, products through washing, sedimentation, filtration separation, drying, crushing, magnesium hydroxide products.According to the need to add surface treatment agent for surface treatment.
Magnesium hydroxide purposes
1. The magnesium hydroxide is excellent flame retardant plastic, rubber products.In the aspect of environmental protection as a basis for the flue gas desulfurization agent, instead of caustic soda and lime as neutralizing agent of acid wastewater.Also used as oil additives, anti-corrosion and desulfurization effect.In addition, can also be used in electronic industry, pharmaceutical, sugar refining, insulation materials and manufacturing other magnesium salt products.2. This product can be used as flame retardants and flame retardant fillers added to the polyethylene, polypropylene, polystyrene and ABS resin, has good flame retarding and smOKe suppression effect, join the amount of 40 to 20.But need anionic surfactant treatment particle surface, can use cheap senior fatty acid alkali metal salt or alkyl sulfate and sulfonated succinic acid ester etc anionic surface active agent, dosage of about 3%.The manufacture of this product is also used in magnesium salt, sugar refining, pharmaceutical [http://www.guidechem.com/cas/1143568316.html] industry, daily chemical industry, etc.
Ok.Let's end here. I will pull out more about chemical raw materials later.Thanks!
Magnesium hydroxide synthesis method
1. A method of lime brine Will advance the purified brine refining processing and made of lime milk of lime treated by digestive slag in the sedimentation tank to carry on the precipitation reaction, adding flocculating agent in the slurry, after mixing, access to the settling tank for separation, then through filtration, washing, drying, crushing, magnesium hydroxide was finished.The reaction equations are as follows:
MgCl2+Ca(OH)2→CaCl2+Mg(OH)2
2. Brine - ammonia method With through purification treatment to remove impurities such as sulfate, carbon dioxide and a small amount of boron brine as raw materials, ammonia as precipitant for precipitation reaction in the reaction kettle, in front of the reaction in a certain amount of seed, fully mixing.And ammonia in the brine ratio is 1: (0.9 ~ 0.93), control the temperature of 40 ℃.
Adding flocculating agent after the end of reaction, sediment after filtering, washing, drying, crushing, magnesium hydroxide was finished.The reaction equations are as follows:
MgCl2+2NH3*H2O→Mg(OH)2+2NH4Cl
The test method to improve the yield, shorten the washing cycle, improve and perfect the production process.3. Ling magnesia magnesite stone with hydrochloric acid, ammonia method in shaft kiln calcining anthracite coal or cOKe, magnesium oxide and carbon dioxide.Magnesia powder into water slurry and regulations in the concentration of hydrochloric acid reaction after the preparation of magnesium chloride solution.The magnesium chloride solution with certain concentration of ammonia in the reactor for reaction, products through washing, sedimentation, filtration separation, drying, crushing, magnesium hydroxide products.According to the need to add surface treatment agent for surface treatment.
Magnesium hydroxide purposes
1. The magnesium hydroxide is excellent flame retardant plastic, rubber products.In the aspect of environmental protection as a basis for the flue gas desulfurization agent, instead of caustic soda and lime as neutralizing agent of acid wastewater.Also used as oil additives, anti-corrosion and desulfurization effect.In addition, can also be used in electronic industry, pharmaceutical, sugar refining, insulation materials and manufacturing other magnesium salt products.2. This product can be used as flame retardants and flame retardant fillers added to the polyethylene, polypropylene, polystyrene and ABS resin, has good flame retarding and smOKe suppression effect, join the amount of 40 to 20.But need anionic surfactant treatment particle surface, can use cheap senior fatty acid alkali metal salt or alkyl sulfate and sulfonated succinic acid ester etc anionic surface active agent, dosage of about 3%.The manufacture of this product is also used in magnesium salt, sugar refining, pharmaceutical [http://www.guidechem.com/cas/1143568316.html] industry, daily chemical industry, etc.
Ok.Let's end here. I will pull out more about chemical raw materials later.Thanks!
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