Coke is mainly used in blast furnace ironmaking and blast furnace smelting of non-ferrous metals such as copper, lead, zinc, titanium, antimony and mercury. It plays the role of reducing agent, heating agent and material column framework.
The use of coke instead of charcoal in ironmaking blast furnace has laid the foundation for the large-scale of modern blast furnace and is a major milestone in the history of metallurgy. In order to achieve better technical and economic indexes for blast furnace operation, smelting coke (metallurgical coke) must have appropriate chemical and physical properties, including thermal properties in smelting process.
Coke is not only widely used in iron making and non-ferrous metal smelting (metallurgical coke), but also used in casting, chemical industry, calcium carbide and ferroalloy, with different quality requirements.
For example, the particle size and porosity of casting coke are generally high, such as low carbon and fixed coke; Coke for chemical gasification has not strict requirements on strength, but requires good reactivity and high ash melting point; Coke for calcium carbide production is required to increase the fixed carbon content as much as possible used widely in fields of iron and steel making, foundry industry,
the chemicals industry, calcium carbide manufacturing, ferro alloy industry, etc.
1. Industrial magnesium chloride is an important inorganic raw material in the chemical industry. It is used to produce magnesium carbonate, magnesium oxide and other magnesium products. It is also used as raw material of antifreeze.
2 in metallurgical industry, it is used to produce metal magnesium (prepared by melt electrolysis), liquid chlorine and high-purity magnesia.
3. Industrial magnesium chloride is an important raw material for the production of light building materials in the building materials industry, such as glass fiber tile, decorative board, sanitary ware, ceiling, floor tile, magnesia cement, ventilation duct, anti-theft well cover, fireproof doors and windows, fireproof board, partition board, artificial marble and other high-rise building products. Among magnesite products, it can be used as high-quality magnesium tile, high-quality fireproof board, magnesium packing box, magnesium decoration board, light wallboard, abrasive tools, stove, fireworks fixing agent, etc.
4. Industrial magnesium chloride can be used as food additive, protein coagulant, snow melting agent, refrigerant, dustproof agent, refractory, etc. in other fields. The tofu made with brine (magnesium chloride aqueous solution) is tender and delicious than that made with gypsum.
5. Industrial magnesium chloride in the metallurgical industry: it is used to manufacture the binder of refractory materials and furnace arm, and is the raw material for manufacturing.
1. The chemical industry is used to manufacture sodium sulfide, sodium silicate, water glass and other chemical products.
2. A cooking agent used in the manufacture of kraft pulp in the paper industry.
3. Glass industry is used to replace soda ash as cosolvent.
4. The textile industry is used to prepare vinylon spinning coagulant.
5. Used in nonferrous metal metallurgy, leather, etc.
6. It is used to make sodium sulfide, pulp, glass, water glass and porcelain glaze. It is also used as a laxative and an antidote to barium salt poisoning. It is a by-product of hydrochloric acid produced from salt and sulfuric acid. In chemical industry, it is used to manufacture sodium sulfide, sodium silicate, etc. The laboratory is used to wash away barium salts. In industry, it is used as raw material for the preparation of NaOH and H so. It is also used in papermaking, glass, printing and dyeing, synthetic fiber, leather making, etc. Sodium sulfate is one of the most commonly used post-treatment desiccants in organic synthesis laboratory.
7. It is mainly used as filler for synthetic detergent. A cooking agent used in the manufacture of kraft pulp in the paper industry. Glass industry is used to replace soda ash. The chemical industry is used as raw materials for manufacturing sodium sulfide, sodium silicate and other chemical products. The textile industry is used to prepare vinylon spinning coagulation bath. The pharmaceutical industry is used as a laxative. It is also used in nonferrous metallurgy, leather, etc.
8. The hydration product calcium sulphoaluminate is formed faster, which speeds up the hydration and hardening speed of cement. The content of sodium sulfate is generally 0.5% ~ 2% of the cement quality, which can improve the early strength of concrete by 50% ~ 100%. The 28 day strength sometimes increases and sometimes decreases, and the increase range is about 10%, which varies with the cement variety, curing conditions and content. It is also used as filler for synthetic detergent, paper industry, glass industry, chemical industry, textile industry and pharmaceutical industry.
9. It is used as analytical reagent, such as dehydrating agent, digestion catalyst in nitrogen determination, and interference inhibitor in atomic absorption spectrometry. It is also used in the pharmaceutical industry.
10. It is used in chemical industry, papermaking, glass, dyestuff, printing and dyeing and pharmaceutical industry. It is also used in the manufacture of synthetic fiber, tanning, non-ferrous metallurgy and enamel. It is also used as an additive in detergent and soap.
11. It can be used as a buffer in sulfate zinc plating to stabilize the pH value of the bath.
1. Chemical industry. 2. Metallurgical industry. 3. Ceramic industry. 4. Glass industry. 5. Food industry. 6. Pharmaceutical industry. 7. Printing and dyeing industry: used as soft water agent. 8. Leather industry: used for degreasing raw leather, neutralizing chrome tanned leather and improving the alkalinity of chrome tanning solution.
1. Chemical industry: used for preparing sodium salt, metal carbonate, bleach, filler, detergent, catalyst and dye. 2. Metallurgical Industry: used to remove sulfur and phosphorus, beneficiation and production of copper, lead, nickel, tin, uranium, aluminum and other metals. 3. Ceramic industry: used for making refractory materials and glazes. 4. Glass industry: This is a large consumption field of soda ash. 0.2 tons of soda ash is consumed per ton of glass, which is mainly used for float glass, kinescope glass shell, optical glass, etc. 5. Food industry: as neutralizer and bulking agent, such as amino acids, soy sauce and flour foods, such as steamed bread, bread, etc. It can also be prepared into alkaline water and added to pasta to increase elasticity and ductility. Sodium carbonate can also be used to produce monosodium glutamate. 6. Laxative: Industrial laxative. 7. Printing and dyeing industry: used as soft water agent. 8. Leather industry: used for degreasing raw leather, neutralizing chrome tanned leather and improving the alkalinity of chrome tanning solution.
1. As a quality improver such as bulking agent, dough regulator, buffer, nutritional supplement, emulsifier and stabilizer, it can improve the complex metal ions, pH value and ionic strength of food, and improve the adhesion and water holding capacity of food.
2. Used as analytical reagent.
3. It is widely used as feed additive for aquaculture animals and livestock and poultry breeding animals. The addition amount of feed is generally 1% ~ 2%.
4. It is used in refractory industry, sewage treatment, food bulking agent and calcium fortifier, wine flavoring agent, fermentation accelerator, etc.
5. Used as analytical reagent and plastic fixing agent.
6. It is used as plastic stabilizer and additive in the production of glass. It is used as baking powder starter, yeast nutrient, calcium nutritional supplement and loosening agent in the food industry
Ammonium bicarbonate, the chemical ammonium bicarbonate, is a food additive approved by the state for food products, which conforms to the national food safety and is allowed to be used. Used as a high-grade food starter. Combined with sodium bicarbonate, it can be used as the raw material of swelling agent such as bread, biscuit and pancake, and also as the raw material of foaming powder fruit juice. It is also used for blanching green vegetables, bamboo shoots, medicine and reagents.
