为了改变清砂工序的落后面貌,认真解决硅尘危害,保护工人健康,在厂党委和革委会领导下,组织了三结合的水力清砂施工小组。在设计施工中,同志们怀着深厚的无产阶级感情,深入进行调查研究,因地制宜制定设计方案;解放思想,勇于实践,大胆革新沿用的设备。经过七个月的努力奋战,于一九七一年年底胜利地建成了一套水力清砂和旧砂湿法再生设备。 In order to change the backwardness of the sand removal process, seriously address the hazards of silica dust and protect the health of workers, under the leadership of the Factory Party Committee and the Revolutionary Committee, the three combined hydraulic sand cleaning construction teams were organized. In the design and construction, with deep feelings of the proletariat, the comrades conduct in-depth investigations and studies and formulate design proposals according to local conditions; they liberate their minds, make their bravery practical and boldly innovate the equipment they follow. After seven months of hard work, a set of hydraulic sand-cleaning and old-sand wet-regeneration equipment was successfully completed at the end of 1971.