Process Design For Preparing Calcium Carbonate From Calcium Carbide Slag | Carbide Slag Grinding Mill For Sale

The main composition of carbide slag is calcium oxide, which accounts for more than 50%, and also contains a small amount of magnesium oxide, aluminum oxide, iron oxide and silicon dioxide. At present, calcium carbide slag is mainly used to manufacture cement and building materials, and its effective components have not been fully utilized. HCMilling(Guilin Hongcheng), as a manufacturer of carbide slag grinding mill, our carbide slag grinding mill have been widely used in the comprehensive utilization of calcium carbide slag.

Carbide slag mainly comes from the production of polyvinyl chloride and vinyl acetate by calcium carbide method. Each ton of PVC produced consumes about 1.45 tons of calcium carbide, and each ton of calcium carbide will be hydrolyzed to produce 1 ton of calcium carbide slag. Therefore, 2 tons of calcium carbide slag should be discharged for every 1 ton of PVC produced. Carbide slag is large in quantity, high in alkali content, and contains harmful substances such as sulfur and arsenic. If it is discharged without treatment, it will block sewers, accumulate riverbeds, and endanger fishery production. Stacking on land will occupy land and pollute the environment. In order to make full use of calcium carbide slag, Ma Yanrong provided a process design for preparing calcium carbonate from calcium carbide slag. This design can effectively extract the calcium contained in the calcium carbide slag and provide a new way for the industrial application of calcium carbide slag. The method is simple and requires equipment investment. Less, is a method worthy of promotion and application.

Process design process for preparing calcium carbonate from calcium carbide slag: Grind calcium carbide slag into 80-100 mesh coarse powder, place it in a reactor and mix it with water, and then put excess hydrochloric acid into the reactor to convert the oxides in the carbide slag. It is a soluble chloride, and then, the reaction product is filtered to obtain a filtrate mainly containing calcium chloride, and the filtrate also contains a small amount of aluminum chloride and ferric chloride; The solution is reacted, calcium ions and carbonate ions are combined into calcium carbonate and precipitated. After filtration, a calcium carbonate filter cake is obtained, and the calcium carbonate filter cake is dried and pulverized to obtain a pure calcium carbonate product.

HCMilling(Guilin Hongcheng) is a manufacturer of carbide slag grinding mill. The calcium carbide slag vertical roller mill, carbide slag Raymond mill, lime digesters and other equipment we produce provide good equipment for the comprehensive utilization of carbide slag. HLM series calcium carbide slag vertical roller mill can realize high-humidity materials while drying and grinding, saving energy and reducing consumption, and with slag discharge function, it has better adaptability to high-moisture carbide slag materials. If you have related needs, please contact mkt@hcmilling.com or call at +86-773-3568321, HCM will tailor for you the most suitable grinding mill program based on your needs, more details please check www.hcmilling.com.