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我省统配煤矿现有选煤厂17座,年入选原煤1558万t(其中单纯的重力选煤厂13座,入洗原煤1353万t),进入浮选的原煤205万t,占入选原煤量的13.15%,每年浮选尾矿水约2500万m~3,含尾矿38.4万t。70年代末80年代初,各选煤厂都用煤泥池进行沉淀,沉淀池溢流水部分返回生产系统利用,大部分排到厂外的沟河渠道,严重地污染了环境,影响了人民的身体健康。近几年来,随着环境保护工作的不断深入,各选煤厂的洗水闭路循环工作抓得紧,效果显著。1989年17座选煤厂全部达到了部颁发的
Coal mines in the province with the existing coal preparation plant 17, the annual inclusion of 15.58 million tons of coal (including pure gravity coal preparation plant 13, 13,530,000 tons of raw coal washing), into the flotation of 2,050,000 tons of raw coal, accounting for selected raw coal 13.15% of the total amount of flotation tailings each year about 25 million m ~ 3, with 384,000 t tailings. In the late 1970s and early 1980s, all coal preparation plants were precipitated with slime ponds, and part of the sedimentation tank overflowed water was returned to the production system for utilization. Most of the discharges were routed to ditches and channels outside the factory, seriously polluting the environment and affecting people’s Healthy body. In recent years, with the continuous deepening of environmental protection work, the close-loop recycling of washing water at all coal preparation plants has been tightened with remarkable results. In 1989, all 17 coal preparation plants reached a ministry level