1. Process principle ** According to the results of high temperature reaction of minerals, vanadium in stone coal is mainly in the form of calcium silicon vanadate and calcium titanium vanadium oxide after roasting vanadium in vanadium shale ( stone coal ). ** The molecular formula of calcium silicate vanadate is: (Ca 5.97 , Fe 0.03 , Mg 0.02 ) 6.02 [(Si 1.02 O 4 )(V 0.96 , Ti 0.04 O 4 ) 2 ], the chemical nature of the mineral is unstable, very It dissolves quickly in weak acidic media. 2. Advantages of stone coal calcification step-type roasting vanadium extraction technology ** Replacement of salt with calcium salt (lime, limestone ) completely eliminates the problem of exhaust gas pollution of toxic and harmful gas containing HCl, Cl 2 and so on. ** Significant technological innovations have been made in the selection and design of the roaster, the roasting process is mechanized, the temperature control accuracy is about 10 degrees, the production efficiency is high, and the labor hygiene conditions are good. The step-type vanadium ore roaster researched and developed by our company has been successfully operated in a factory in Henan for nearly three years, and the ore is treated 200T per day. It is the only environmentally friendly vanadium ore roaster with the same industrial scale operation in the same industry. ** The calcined material is low acid leaching (acid concentration 1-2%, sulfuric acid), the production cost is low, and the liquid contains less impurities, which is beneficial to the process water recycling. ** The leaching slag is mechanically filtered and washed to increase the yield and reduce the surface water and groundwater pollution caused by the slag during the stacking process. ** With the new technology of leachate removal, the product quality can meet the national standard requirements stably, and effectively reduce the concentration of pollutants in the wastewater. ** Strengthen wastewater treatment and recycling process, high wastewater recycling rate, and zero discharge of wastewater. The wastewater treatment and recycling process and technology developed by the company have passed the expert review in the Guizhou Provincial Environmental Protection Bureau and are the first in the same industry in the country. Hose Pump have strong self priming, pump been used to transfer the liquid with big solid particles, like: Concrete, sludge, mud, Cow dung etc.
A wall smooth, reliable strength of special rubber hose inside the pump installation, by rotating the squeezing roller along the hose is a pair of such rotation makes medium to one direction, and there won't be back.Flattened hose under their own flexibility and side guide roller forced restorable. At this point, the tube materials materials will produce high vacuum suction cavity, and then, the material in the subsequent roller pressure escape from the hose.So the cycle, material overtaken by suction and discharge.
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