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What are the safety measures of calcium carbonate? Calcium carbonate manufacturers for you!
Release time:
2023-05-11
According to the manufacturer of calcium carbonate, calcium carbonate is an inorganic compound with a chemical formula of CaCO, which is the main component of limestone, marble, etc. Calcium carbonate is essentially insoluble in water and dissolves in (reacts with) hydrochloric acid. It is one of the common substances on the earth. It exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of some animal bones or shells. Calcium carbonate is also an important building material. It is widely used in industry.
According to the manufacturer of calcium carbonate, calcium carbonate is an inorganic compound with a chemical formula of CaCO, which is the main component of limestone, marble, etc. Calcium carbonate is essentially insoluble in water and dissolves in (reacts with) hydrochloric acid. It is one of the common substances on the earth. It exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of some animal bones or shells. Calcium carbonate is also an important building material. It is widely used in industry.
What are the safety measures of calcium carbonate? Calcium carbonate manufacturers for you!
Environmental hazard: This substance is basically harmless to the environment, but should not be poured into water without permission.
Health hazards: Workers engaged in mining and processing often have upper respiratory tract inflammation and bronchitis, which may be accompanied by emphysema. Chest x-ray showed calcification with enhanced lung texture. Workers suffering from pneumoconiosis is mainly related to the silica impurities contained in this product.
Storage method: 1 food grade plastic bags wrapped in woven bags. 2. Store in a cool, dry and ventilated place, which can be sealed at (25 ℃,100 kPa). This product is not regulated. 3. Do not store with toxic chemicals and liquid acids. Pay attention to moisture.
What is the preparation method of activated calcium carbonate? Calcium carbonate manufacturers introduce you!
The production principle is basically the same as that of light calcium carbonate. The difference is that the carbonization conditions are strictly controlled, fine calcium carbonate is generated, and 1% to 5% of stearic acid, resin acid, lignin or cationic surfactant is added for surface treatment to adjust the agglomeration state of the particles and prevent grain growth.
The preparation method of calcium carbonate whiskers: 1~2 micron needle-like calcium carbonate whiskers and phosphoric acid compounds are added to Ca(OH)2 slurry in advance, and then CO2 gas is introduced to obtain calcium carbonate whiskers. Or industrial lime digestion, to a certain concentration of magnesium chloride solution to add carbon dioxide gas gas-liquid reaction, dehydration and drying to obtain calcium carbonate whiskers.
What is the preparation method of ultrafine light calcium carbonate? Calcium carbonate manufacturers introduce you!
Generally, ultra-fine light calcium carbonate is carbonized from lime milk. The limestone is decomposed into quicklime and carbon dioxide by calcination. Quicklime is digested to produce milk of lime. Then, carbon dioxide is introduced into the milk of lime to perform a carbonation reaction to produce calcium carbonate, and a surface treatment agent is added to the calcium carbonate slurry to perform particle surface treatment. Then the process of filtering, drying, crushing and sieving is carried out in turn to obtain the product.
What is the preparation method of heavy calcium carbonate? Calcium carbonate manufacturers introduce you!
(1) Crushing method: firstly, the white stone containing more than 90% CaCO3 is roughly crushed in a rotary crusher, so that the large rock can be crushed to pass through a 76mm sieve. Then, fine grinding is carried out in hammer mill, rotary hammer mill, squirrel cage mill or masticator, rotary roller mill, hard mill or wheel mill to crush CaCO3 through 100 mesh sieve, and then crushed by Raymond vacuum mill or gravel mill with crushing collector and vacuum tube. After air separation, over-large particles are removed by centrifugal separation with reaction rotation or multi-blade guide plate. The resulting materials are screened and graded to obtain the finished product. (2) replacement method: in a certain concentration of sodium carbonate solution to add a certain concentration of calcium chloride solution, the replacement reaction, and then precipitation, separation, drying, crushing, sieving.
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