[China Aluminum Industry Net] Aluminosilicate - Calcium sulphoaluminate expansion agent involves a concrete expansion agent, metakaolinite clinker obtained by calcining kaolinite and sulphoaluminate obtained by calcining high alumina cement raw material The calcium clinker and gypsum are mixed and grinded in an appropriate proportion. Aluminosilicate-a method for producing a calcium sulphoaluminate expansion agent, including a metakaolinite clinker and calcium sulphoaluminate clinker preparation and a mixed pulverizing process, that is, firstly calcining under a suitable temperature condition Rhyolite prepares metakaolinite clinker by preparing metakaolinite clinker and calcining high-alumina cement raw meal under the condition of adding appropriate amount of gypsum mineralizer to prepare calcium sulfoaluminate clinker and then preparing the metakaolinite clinker. Calcium sulphoaluminate clinker and gypsum are mixed and ground to a certain degree of fineness of the aluminosilicate - calcium sulphoaluminate swelling agent. Aluminosilicate-calcium sulphoaluminate expansion agent content is only 6-8%, alkali content is less than 0.6%, and it is a low-volume, low alkali content concrete expansion agent.
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