Hydrated Lime Manufacturing Process

Limestone is a non-renewable resource, with the development of the continuous progress of science and technology and nanotechnology, limestone applications is further widened. Limestone crushed by crusher sand making process can be used in many fields, and achieved considerable economic benefits, limestone powder processing industry in recent years gradually vigorous.

Limestone can be directly processed into stone and fired into the quicklime. Quicklime and slaked lime there. The main ingredient is quicklime CaO, the general was massive, pure white, light gray or yellowish containing impurities. Lime to absorb moisture or water to become hydrated lime, slaked lime, also known as its main ingredient is Ca (OH) 2. Slaked lime is formulated into a stone mortar, lime paste, lime mortar, brick used as coating materials and adhesives.

Cement is a mixture of limestone and clay, prepared by calcination. Glass from the mix of limestone, quartz sand, soda ash, etc., high temperature melting system. Iron with limestone for flux, remove gangue. Steelmaking slag material to do with lime to remove sulfur, phosphorus and other harmful impurities. Calcium carbide (main ingredient is CaC2) is quicklime and coke in an electric furnace reaction. Soda ash is used limestone, salt, ammonia and other raw materials through multi-step reaction (Solvay process).

The use made of soda lime and soda ash reaction (harsh method). The use of pure lime and chlorine bleach prepared by the reaction. Made by chemical processing of limestone, calcium chloride, calcium, calcium sulfite and calcium is important. Lime water can be removed temporarily rigid, as a water softener. Limestone burning processed into pure calcium carbonate powder, used rubber, plastics, paper, toothpaste, cosmetics and other filler.

Lime and caustic soda lime made, as the carbon dioxide absorbent. Quicklime used as a drying agent and disinfectant. Agriculture, prepared with lime lime sulfur mixture, Bordeaux mixture. Soil application of lime to neutralize the acidity of the soil, improve soil structure, supply of plant needed calcium. Stone mortar brush tree trunk to protect the trees.

Overview of hydrated lime for water treatment is a specialized chemical raw materials, not the indigenous production of our common low quality lime, it must be produced by a professional factory, to meet the requirements of high-quality water treatment lime. Currently the lime production technology and equipment is relatively simple, and the introduction of foreign production equipment is expensive, large investments. To improve the technological level of domestic production of lime, we through research in the digestion and absorption of foreign advanced technology, we design a production capacity of 20 kt / a of lime production plant.

The device is used in all domestic equipment, the practice proved that the device is stable and reliable performance, the level of automation of advanced and practical, easy to master, easy maintenance, advanced technology, low investment. For power plant cooling circulating water quality requirements lime is high, and therefore the device for raw materials and products slaked lime are more stringent quality requirements.

Device characteristics of the domestic traditional lime production plant operating environment exists mostly dust, lime digestion rate, low yield lime, low-screening efficiency, sieve Netease damage, product size uniform, unstable quality and other issues.

In response to these problems, we have done a lot in the process and equipment selection to work on the digestive system of a confined feeding equipment to take measures to strengthen the digestion reaction digestive effect, milling system using closed-loop production, separator device instead of the conventional screening equipment.

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