Thee materials used for the slurry are a mixture of plaster, a binder and powdered silica, a refractory, for low temperature melts.

对较低熔化温度而言，用于耐热浆的材料是石膏作粘合剂和用粉末状硅石作耐温材料的混合物。

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For the sake of treating textile-dyeing wastes, experiments on the activation of silica and powdered coal ash with HCI and its efficiency of treatment are carried out.

为了处理印染废水，进行了用HCI活化硅藻土、粉煤灰及其处理效能的试验。

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