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大连市金州石棉矿为地下开采矿山,采用尾矿干式充填采旷法,年石棉生产能力在1万吨以上,每年排弃石棉尾矿达25万吨。这些尾矿除矿山每年回填井下采空区7万吨左右外,其余交给矿属大集体企业港湾实业公司建筑材料厂处理。该厂现有职工123人,采用锤式破碎机、轮碾机和平面摇动筛等设备和简单的工艺流程即可生产出水磨石、水刷石、混等砂、尾岩粉和7级棉等建筑材料。砂石加工标准:水磨石6—10毫米;水刷石3.5—6毫米;混等砂2—3.5毫米;尾岩粉0.5—2毫米。砂石产
The asbestos mine in Jinzhou, Dalian is a underground mining mine, adopting dry mining tailings mining method, annual asbestos production capacity of 10,000 tons and above, annual asbestos tailings up to 250,000 tons. In addition to these tailings mine backfill each year underground 70,000 tons of goaf, the rest to the mine is a large collective enterprise Harbor Industrial Building Materials Factory processing. The factory employees 123 people, the use of hammer crusher, wheel mill and flat rock screen and other equipment and a simple process to produce terrazzo, water brush stone, mixed sand, tailings powder and 7 cotton, etc. Building materials. Gravel processing standards: terrazzo 6-10 mm; water brush stone 3.5-6 mm; mixed sand 2-3.5 mm; tail rock powder 0.5-2 mm. Gravel production