Industrial producing gypsum resources comprehensive utilization

Gypsum is the use of fluorite and sulfuric acid hydrogen gas industrial waste residue after acid, hydrogen acid is 3.6 tons per production 1 ton no moisture gypsum formation, its production response equation is as follows:H2SO4+CaF2 →2HFt +CaSO4Gas gypsum from the eduction in reactor, temperature of 180 ~ 230 ℃, gas temperature of 800 ~ 1000 ℃, the discharge of gypsum as anhydrous calcium sulfate, belong to ICaSO4. Puffing out of the kiln, stone has contained the remnants of fluorite and sulfuric acid, sulfuric acid leaching liquid gas and the content is higher, more than the limit value of the journal of hazardous waste identification standard, the environmental protection department requirements shall not be piled up the ground. For gasification hydrogen enterprise in our country, most of the lime neutralization, is about to add lime powder of gypsum and emissions to the PH = 7. Lime neutralization of sulfuric acid, the calcium sulfate. Gas emissions from the purity of gypsum, can reach 80%90%.The present status of use of gypsumMy company's survey data show that the current domestic 88 oxidation hydrogen enterprise, its main gas gypsum waste residue as cement retarder for cement plant. The price in 40 yuan/T ~ 100 yuan/T. Capacity decline in recent years, cement, gypsum way out into question, thus affecting the normal production of the enterprise. Since 2018, the gas gypsum governance has become each big gasification aluminum enterprises environmental problem., gas gypsum application:Anhui's new material co., LTD. Has been committed to the application technology research of gas stone), has obtained a patent for invention: ZL201010587404.7, paying ZL201110398888.5, working with the gasification aluminum enterprises docking, adapter right products development, better resource utilization, in 2013, 2014 in xinxiang, henan, hunan liuzhou gas on the gypsum block molding machine of gypsum to produce gypsum block, through inspection can reach the standard of gypsum block Requirements. In 2012 the company workshop production of gas - 2017 has been in good condition of gypsum block wall, gas gypsum block is completely can meet the technical requirements, is a success.Caused by a lack of urgency, no application market, as the gas comprehensive utilization of gypsum resources pressure, oxygen gypsum industrial production will be formed.