In the non-metallic ore mining and processing powders, they tend to produce quartz mine tailings, slag and a variety of solid waste, stockpiling these "misplaced resources" not only take up a lot of space, and could easily lead Environmental pollution. For companies, how to deal with these solid waste is a very headache! Inorganic thermal insulation mortar is mainly composed of inorganic lightweight aggregates, cementing materials, additives and other admixtures with internal porous and heat insulating properties. It is an inorganic building insulation with low density, corrosion resistance, non-cracking and high fire resistance. material. In recent years, combined with the problem of large accumulation of industrial solid waste, it has been effectively applied to inorganic thermal insulation mortar, which has become a research hotspot for experts and scholars. Industrial solid waste (referred to as industrial solid waste) refers to fuel waste residue, smelting and chemical process waste, mining waste rock or beneficiation tailings discharged from industrial production and processing, no longer have use value or have been extracted from useful components. Remaining waste. At present, there are many types of solid waste resource utilization technologies and rapid development, such as the use of building materials, glass-ceramics, dry-mixed mortar, road materials, lightweight ceramsite, high-performance ceramics, and the like. As a “misplaced resourceâ€, the use of industrial solid waste to produce inorganic thermal insulation mortar can not only consume a large amount of industrial solid waste, but also effectively improve the various properties of the inorganic thermal insulation mortar itself, thereby achieving good economic and social Environmental benefits. 1. Production of light aggregates by industrial solid waste Light aggregates mainly play the role of skeleton and thermal insulation in inorganic thermal insulation mortar. In addition to the existing lightweight aggregates such as vitrified microspheres and expanded perlite , industrial solid waste can also meet the performance requirements of low density and high strength. The silt pottery sand and the waste aerated concrete composite vitrified microbeads are used as the thermal insulation mortar aggregate, and the self-insulating wall supporting mortar can be prepared. In powdered coal ash, and carbide slag desulfurization gypsum as the main raw material, a low-temperature firing process, may be prepared new inorganic cementitious material having a microporous structure. The use of waste resources to produce thermal insulation mortar lightweight aggregate can not only effectively reduce the production cost of thermal insulation mortar, but also be one of the directions for comprehensive recycling of industrial waste ceramic sand or aerated materials. 2, the use of industrial solid waste production of cementitious materials The cementitious material mainly plays a role in cementation in the inorganic thermal insulation mortar, and also makes the mortar have sufficient strength and construction performance. The commonly used cementitious material is cement, but in recent years many industrial solid wastes (slag, fly ash, desulfurized gypsum, coal gangue) have been developed as auxiliary cementitious materials. (1) Fly ash Fly ash is one of the most industrial wastes in China, and it is the main solid waste discharged from coal-fired power plants. Fly ash is light in weight and has a certain hydraulic activity. The industrial waste slag fly ash is used as a cementing material to replace part of the cement, and the vitrified microbeads are used as the inorganic light aggregate to prepare a dry mixed inorganic thermal insulation mortar. The research shows that with the increase of the amount of fly ash, the compressive strength of the mortar first increases and then decreases. When the amount of fly ash is 20%, the thermal insulation mortar with better performance can be prepared. . (2) Mineral powder Adding mineral powder to inorganic thermal insulation mortar can improve the physical and mechanical properties of the mortar, increase the strength and service life of the concrete, and improve the impermeability and water resistance. (3) Plaster After the gypsum is mixed with the right amount of water, a slurry with good plasticity can be formed. With the reaction of gypsum and water, the plasticity of the slurry disappears and coagulation occurs quickly, and the strength is further generated and developed after hardening. The use of industrial solid waste to produce admixtures and admixtures in the inorganic thermal insulation mortar to add admixtures to improve the performance of the mortar, industrial solid waste can also play a similar role. The addition of the admixture to the thermal insulation mortar aims to reduce the cost of the raw materials as much as possible without affecting the performance of the mortar product. 3, the use of tailings sand to produce aggregate Tailings sand is one of the main industrial solid wastes, and its stockpiles occupy a large amount of land resources, which increases the cost of corporate governance. In general, the incorporation of sand can improve the workability, physical and mechanical properties and dry shrinkage resistance of the mortar, but the density of the sand is large and the thermal conductivity is high, which tends to increase the dry density of the mortar, reduce the gas content, and maintain the mortar. The thermal performance is unfavorable. Therefore, although the tailings sand can be incorporated into the ordinary dry-mixed mortar as an aggregate, the sand incorporation and particle size grading must be strictly controlled on the basis of ensuring the thermal performance of the mortar. 4. Development trend of industrial solid waste in the application of inorganic thermal insulation mortar Industrial solid waste is used in inorganic thermal insulation mortar to improve the performance of thermal insulation mortar and improve economic efficiency. On the other hand, it can consume existing industrial solid waste, thereby reducing the pressure on enterprises and society. From the current research and application situation, its development trend is as follows: Trend 1: When industrial solid waste is used as a raw material to prepare inorganic thermal insulation mortar, the amount of addition is increased as much as possible on the basis of meeting the relevant standards. Trend 2: More types of solid waste will be applied to the production of building materials such as inorganic thermal insulation mortar, and there will be more and more research on the related mechanisms of a certain kind of industrial solid waste. Trend 3: At present, there is no uniform standard for thermal insulation mortar for industrial solid waste, but several main blending components such as fly ash, industrial gypsum and slag powder should be unified and reasonable according to relevant research results. The nature of the requirements. Trend 4: When tailings sand is used as aggregate to be added to inorganic thermal insulation mortar, different raw material formulations have strict limits on the size of tailings. Therefore, the application of tailings in inorganic thermal insulation mortar will be limited. Single Artificial Spider Plant,Artificial Spider Plant Decor,Artificial Spider Plant,Artificial Spider Plant Flowers TaiFong , https://www.tfmadeflowers.com