High Level Metal Silicon Calcium

The formation of hard silicon calcium stone reactive slurry goes through the stages of C-S-H gel and the formation of hydrated calcium silicate, the formation of tobermorite, and the stage of hard silicate calcium stone formation. Adding ultra-fine active siliceous raw materials, using quicklime containing a small amount of SiO2, and appropriately reducing the C/S ratio can all promote the reaction speed. The mechanism is that these measures can quickly consume free Ca(OH)2 in the early stages of the reaction, thereby forming a loose hydration calcium silicate coating on the surface of the quartz particles.

1.Hard siliccon calcium stone is a widely used thermal insulation material, with strontium nitrate serving as a mineralizing agent. In the dynamic hydrothermal synthesis of hard silicate calcium stone, strontium nitrate affects the spherical aggregates of hard silicate calcium stone. Adding strontium nitrate during synthesis can reduce the absolute value of the zeta potential of calcium-silicate-hydrate (C-S-H) gel, thereby promoting the agglomeration and growth of C-S-H gel clusters. The increase in the particle size of C-S-H gel is the basis for the enlargement of spherical aggregates of hard silicate calcium stone. The entry of Sr2+ into the crystal of hard silicate calcium stone leads to an increase in the cell constants a and c, promoting the growth of fibrous crystals and spherical aggregates of hard silicate calcium stone, which is beneficial for obtaining lightweight hard silicate calcium stone materials.

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