High-chlorine desulfurization gypsum washing method

• Main Authors: YANG GUOLIANG, LIANG FENG, ZHANG WEI, JIA SHUANGYAN, LI LEI
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2018
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a high-chlorine desulfurization gypsum washing method. According to the present invention, high-chlorine gypsum is washed by a vacuum belt dewatering system, the chlorine ioncontent in the source gypsum slurry is increased from the normal concentration of 20000 ppm to 50000 ppm, and the filter cake rinsing water is recycled so as to ensure the normal operation of the beltdewatering machine and the quality of the gypsum. 本发明涉及种高氯脱硫石膏洗涤方法，高氯石膏洗涤通过真空皮带脱水系统进行洗涤，来源的石膏浆液里氯离子含量由正常20000PPm浓度提高至50000PPm，为保证皮带脱水机正常运行及保证石膏品质，滤饼冲洗水循环利用。