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A platform for research: civil engineering, architecture and urbanism
Process for preparing low-chlorine building gypsum from desulfurized gypsum
The invention relates to a process for preparing low-chlorine building gypsum from desulfurized gypsum. The process comprises the following steps: feeding desulfurized gypsum discharged from a power plant into a cleaning machine, cleaning, and carrying out vacuum filtration, spray washing and draining for later use; crushing the cleaned desulfurized gypsum raw material, feeding the crushed desulfurized gypsum raw material into a drying machine, and performing preliminary drying at the drying temperature of 80-160 DEG C; conveying the dried desulfurized gypsum to a calcining furnace, and calcining at the calcining temperature of 120-230 DEG C; and cooling and conveying the calcined material through a cooling, discharging and conveying mechanism, lifting to a modification mill through a lifting machine after cooling, grinding, feeding into a homogenizing silo, and homogenizing. The solid waste desulfurized gypsum of the thermal power plant can be effectively treated, the problem of secondary pollution caused by stacking can be avoided, waste can be turned into wealth, further development of desulfurization of flue gas of a coal-fired power plant and flue gas of a steel sintering machine in China is promoted, and the process has important practical significance on economic construction and environmental protection in China.
脱硫石膏制备低氯建筑石膏的工艺，该工艺流程为：将电厂排出的脱硫石膏先送入清洗机中进行清洗，通过真空过滤、喷淋水洗、抽干，备用；将清洗后的脱硫石膏原料进行破碎，并送入干燥机内进行初步烘干，干燥温度为80~160℃；烘干后的脱硫石膏输送至煅烧炉进行煅烧，煅烧温度为120~230℃；煅烧后的物料通过冷却出料输送机构进行降温及输送，冷却后由提升机提升至改性磨进行粉磨，然后进入均化库进行均化；本发明可有效处理火电厂固废脱硫石膏，不仅能避免因堆放而引起的二次污染问题，还能变废为宝，促进我国燃煤电厂烟气、钢铁烧结机烟气脱硫事业的进一步发展，对我国的经济建设和环境保护具有重要的现实意义。
Process for preparing low-chlorine building gypsum from desulfurized gypsum
The invention relates to a process for preparing low-chlorine building gypsum from desulfurized gypsum. The process comprises the following steps: feeding desulfurized gypsum discharged from a power plant into a cleaning machine, cleaning, and carrying out vacuum filtration, spray washing and draining for later use; crushing the cleaned desulfurized gypsum raw material, feeding the crushed desulfurized gypsum raw material into a drying machine, and performing preliminary drying at the drying temperature of 80-160 DEG C; conveying the dried desulfurized gypsum to a calcining furnace, and calcining at the calcining temperature of 120-230 DEG C; and cooling and conveying the calcined material through a cooling, discharging and conveying mechanism, lifting to a modification mill through a lifting machine after cooling, grinding, feeding into a homogenizing silo, and homogenizing. The solid waste desulfurized gypsum of the thermal power plant can be effectively treated, the problem of secondary pollution caused by stacking can be avoided, waste can be turned into wealth, further development of desulfurization of flue gas of a coal-fired power plant and flue gas of a steel sintering machine in China is promoted, and the process has important practical significance on economic construction and environmental protection in China.
脱硫石膏制备低氯建筑石膏的工艺，该工艺流程为：将电厂排出的脱硫石膏先送入清洗机中进行清洗，通过真空过滤、喷淋水洗、抽干，备用；将清洗后的脱硫石膏原料进行破碎，并送入干燥机内进行初步烘干，干燥温度为80~160℃；烘干后的脱硫石膏输送至煅烧炉进行煅烧，煅烧温度为120~230℃；煅烧后的物料通过冷却出料输送机构进行降温及输送，冷却后由提升机提升至改性磨进行粉磨，然后进入均化库进行均化；本发明可有效处理火电厂固废脱硫石膏，不仅能避免因堆放而引起的二次污染问题，还能变废为宝，促进我国燃煤电厂烟气、钢铁烧结机烟气脱硫事业的进一步发展，对我国的经济建设和环境保护具有重要的现实意义。
Process for preparing low-chlorine building gypsum from desulfurized gypsum
脱硫石膏制备低氯建筑石膏的工艺
CHEN ZHIHONG (author)
2021-12-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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