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某乡镇企业月生产 2 0余ｔ精铸件 ,但技术水平较差 ,严重的问题是氯化铵硬化剂污染极为严重 ,操作工人身受其害 ,厂房外的大树也难幸免 ,逐渐枯萎。1 硬化剂的选择水玻璃粘结剂常用的硬化剂是氯化铵、氯化镁、氯化铝等。为减少氯化铵的用量 ,选用氯化铵 氯化镁复合硬化剂方案
A township enterprises on the production of more than 20 t castings, but the technical level is poor, the serious problem is the ammonium chloride hardener pollution is extremely serious, operating workers suffer, outside the plant trees are also spared, gradually wilt. 1 hardener selection Water glass binder commonly used hardener is ammonium chloride, magnesium chloride, aluminum chloride and so on. To reduce the amount of ammonium chloride, the choice of ammonium chloride magnesium chloride compound hardener program