▎ 摘　　要

NOVELTY - Producing alkali-free accelerator involves opening the CTAB storage tank and sodium silicate storagetank, the quantitative CTAB, sodium silicate and water the water bath stirring mechanism to stir to 40 degrees C after dissolving the CTAB and sodium silicate, opening the aluminum nitrate storage tank, adding quantitative aluminum nitrate and continuously stirring for 4 hours, aging for 5 days at 100 degrees C, then washing by water and alcohol washing device for water washing and alcohol washing, and adding to the centrifugal drying device for centrifugal drying. The material is continously in the calcining chamber, add fuel combustion inthe upper combustion chamber. The combustion generating high temperature flue gas enters the calcining chamber through the air hole of the gasguide pipe, calcinating the material. The gas after calcining enters into the lower combustion chamber through the gas guide pipe. The gas is heat-absorbing and storing energy by the lower heat accumulator. USE - Method for producing alkali-free accelerating agent. ADVANTAGE - The method has high productivity and energy is fully recycled. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a production device of alkali-free accelerating agent, which comprises a reaction kettle, aluminum sulfate storage tank stored with aluminum sulfate,sodium fluoride storage tank stored with sodium fluoride, ethanolamine storage tank stored with ethanolamine, cellulose ether storage tank stored with cellulose ether, cyclodextrin modified chitosan storage tank stored with cyclodextrin modified chitosan, graphene oxide storage tank stored with graphene oxide and a production mechanism for producing the aluminum modified nano-silicon dioxide, the aluminum sulfate storage tank, sodium fluoride storage tank, ethanolamine storage tank, cellulose ether storage tank, cyclodextrin modified chitosan storage tank, graphene oxide storage tank and production mechanism are connected with the reaction kettle, the production mechanism comprises a CTABstorage tank, sodium silicate storage tank, aluminum nitrate storage tank, water bath stirring mechanism,washing alcohol washing device, a calcining device and a centrifugal drying device.