Among the raw materials used to produce Portland cement, there are two sources of sulfur. One is that clay or shale often contains a small amount of sulfur, or pyrite , sulfate or other organic sulfur compounds. The second source of sulfur is fuel. After the raw meal enters the rotary kiln, the sul
China's magnesite resources are very rich, with reserves of about 2 billion tons, ranking first in the world, of which the recoverable reserves are 1 billion tons. Currently consists of magnesite ore production of magnesium products are mainly for light burning magnesium powder and all kinds of
The Sarcheshmeh copper smelter is operated by two reverberatory furnaces and three converters. The gases and soot generated by these furnaces are purified by a balloon-shaped flue (recycling coarse dust) and an electrostatic precipitator (recycling fine dust). These smelting furnaces produce about
Gansu is one of China's major lead-zinc mineral deposits, Subei County stone cave ditch silver lead-zinc silver for China's large and medium-sized lead and zinc. The project is jointly established by Minmetals Group, Gansu Jianxin Industrial Group Co., Ltd. and Gansu Nonferrous Metals Expl
First, the safe fall protection measures of the slippery shaft, such as lighting, grid screen, manhole cover or railing, must be perfect and reliable, and often checked. In the course of use, it is found that the damage of the fall arrester should be repaired in time. 2. Safety warning signs, safe
Leaching kinetics of the process is to diffuse heterogeneous reaction of zinc-containing solid materials (such as zinc oxide calcine, or zinc, etc.) with a solution (e.g., sulfuric acid) produced. The characteristic is that the chemical reaction between the solution and the zinc material is carri
1) salt during the air pollution, exhausted mainly from the coal-fired boiler heating systems and cogeneration power plant boiler soot, dust and salt boiling drying system exhaust discharged from the bed and the like. 2) Salt industry wastewater is divided into two types: net waste water and turbi
1. Beneficiation : Separating useful minerals from gangue minerals to the greatest extent, removing gangue, enriching useful minerals, or separating commensal useful minerals from each other to obtain high-grade one or more concentrates. process. 2. Rock : A collection of minerals consisting of on
There are many process factors affecting the flotation process, among which the most important ones are: (1) particle size (grinding fineness); (2) pulp concentration; (3) chemical addition and adjustment; (4) adjustment of bubbles and foam; 5) slurry temperature; (6) flotation process; (7) water qu
Wang Chengyan and Qiu Dingfan calculated the E-pH diagram of the Bi 2 S 3 -H 2 O system at room temperature using the thermodynamic data of the materials provided in the literature. See Figure 1. Fig.1 Bi(III)-S-H 2 O system potential-pH diagram The corresponding chemical equations and equilibriu