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湖南省石门磷矿选矿与选矿药剂中间试验成果鉴定会于1980年12月15日至21日在长沙市召开。参加这次会议的有35个单位的70名代表。 这次会议鉴定的内容包括石门磷矿矿物物质组成的研究;选矿制剂—S.P.F.以及毒性试验,日处理原矿50吨半工业性试验成果等。与会代表一致肯定冶金部长沙矿冶研究所多年来对石门磷矿中低品位硅钙质难选胶磷矿进行系统的选别富集研究工作,取得了很大成绩,并首次在国内进行了日处理原矿50吨规模的半工业性试验,获得的主要指标基本达到了湖南省计委、建委对选矿试验
Hunan Shimen phosphate rock beneficiation and beneficiation agent intermediate test results appraisal meeting in 1980 December 15 to 21 held in Changsha City. 70 delegates from 35 units attended the meeting. The meeting identified the contents of the mineral composition of Shimen phosphate rock research; dressing preparation - S.P.F. and toxicity tests, daily processing of 50 tons of ore semi-industrial test results. Participants at the conference unanimously confirmed that the Metallurgical Department of Changsha Institute of Mining and Metallurgy has systematically selected and enriched the low-grade calc-silicate refractory phosphate rock in Shimen Phosphate Mine for many years and achieved great achievements. It was first conducted domestically Day processing of 50 tons of ore semi-industrial scale test, the main indicators obtained basically reached the Hunan Provincial Planning Commission, Construction Committee on dressing test