Quartz Sand & Quicklime, High-end New Building Plate: Calcium Silicate Plate
Calcium silicate board is an inorganic building board with high strength and stable performance, which is made of siliceous materials, calcium materials and reinforcing fibers as the main raw materials.
It has the advantages of fire prevention, thermal insulation, anti-corrosion and moth-proof, waterproof and moisture-proof, sound insulation and sound absorption, light weight and high strength, green and harmless, etc. It is more energy-saving, environmentally friendly, earthquake-resistant and impact-resistant than traditional boards, and can be widely used in interior and exterior wall insulation decoration of buildings , ceiling and cabin partitions, billboards and other fields, and the design and installation of strong plasticity, saving time and labor.
In recent years, with the increasing promotion of prefabricated buildings across the country, the market demand for calcium silicate boards in various places has risen. Whether it is used for composite lightweight wall panels, or directly used for interior and exterior wall insulation decoration, ceilings, floor linings, calcium silicate boards have become an important “role” in prefabricated housing construction.
Quartz sand is one of the most important raw materials in calcium silicate products, accounting for 40% of the raw material quality of calcium silicate boards. The purity of SiO2 in quartz sand has a great influence on the formation of toble mullite crystals during the hydration reaction. Quartz powder that is not involved in chemical reaction also acts as an aggregate in cement cement. However, the wet grinding energy of quartz sand is very large. In order to reduce the energy consumption of wet grinding of quartz sand and use more industrial waste, quartz sand with SiO2 content higher than 90% is preferred in the production of calcium silicate board, and it can be appropriately mixed A certain amount of fly ash to reduce production costs.
Calcium silicate board has good market prospects and faces huge development opportunities and challenges: (1) Necessary measures should be taken in the production process of calcium silicate board to achieve green production and improve production efficiency under the premise of protecting the environment ; (2) To enrich the production raw materials of calcium silicate board, use low-calcium fly ash or quartz sand tailings, other industrial waste residues with high silicon content to replace all or part of the quartz sand, thereby reducing production costs and improving resource utilization; ( 3) In order to meet the needs of the market, the types of calcium silicate board products should be enriched and the durability of the products should be improved.