The flour ash is the fine ash captured from the flue gas after the combustion of the coal. Its main chemical composition is SIO:, A1: O, Fe: O, and sometimes contains higher cao; seloma and coal; The mineral composition of gray is mainly divided into non -fixed phases consisting of glass phase and a small amount of non -fixed carbon, and the crystallization: Mo Lai Shi, red iron ore, magnetite, quartz, graphite, and a small amount of silicate.
In China, powder and coal ash mainly comes from thermal power plants with coal powder as fuel, and in the future for a long time For means, the output of flour ash will continue to increase. The emissions of flour ash not only cause waste of resources and pollute the environment. Since the 1980s, my country has begun to pay attention to increasing the re -use value of flour and coal ash, and carried out a large amount of research on the comprehensive utilization of flour and coal ash.
1 application of flour ash in architectural materials
The application of flour ash in building materials accounts for about 35%m comprehensive utilization of powder and coal ash.
1.1 Gyllahy ash -sintering brick -coal -to -bealing tiles account for 30%to 70%of the comprehensive utilization of the ash. At present, it is mainly steaming powder coal ash bricks and sintering powder coal ash bricks. The comprehensive use channels in the environmental governance of the flour and coal analyzes the advantages of environmental protection, energy conservation, land -saving, beautiful appearance, light weight, and broad prospects, but their preparation process and other are analyzed. Like the production of clay bricks, the release of the flue gas contains a large amount of pollutants, so it is necessary to strengthen the recovery and utilization of discharges while making full use of the preparation of the ash ash.
1.2 flour ash ceramic grain coal ash ceramics is a light quality, hard, hard -quality honeycomb -shaped artificial light collection with a ball ash of about 85%. material. Gansu ash ceramics are used in the following aspects: as a substitute for gravel, prepare special concrete \u003d e; used to deal with wastewater; applied to road building projects, improve anti -slip performance; , Improve the durability of the highway; it is applied to flower moisturizing carriers and soilless cultivation. The production process of flour ash ceramics is relatively mature, but it is mainly roasting. Recently, Liu Zishu and others adopted a fever -free process to stimulate the potential activity of the ash ash, and chose sludge and CA0 as the additive. specialty.
1.3 Powder ash light -quality wall material powder and coal ash light wall material has the characteristics of light, high -strength, insulation, insulation, sound insulation, sound insulation, moisture -proof, environmental protection, non -combustion, sawing drill, etc. Three generations of cold machines have difficulty problems such as wind and leakage, leakage, etc., and more importantly, the fourth -generation cold -cold machine in Shenyang Shengxiong is economical and practical, and the operation is easy to operate. The technical services, so the user has been affirmed. \u0026 ldquo; The road is long and far away, and I will ask for \u0026 rdquo;. ShenyangShengxiong's fourth -generation cold machine was on the road of continuous exploration to the storm, and achieved a certain performance and success.In the future, the way to go is still very long and difficult. In the fierce market competition, you will encounter various difficulties and resistances that are unexpected. Looking forward to the future, the sky tomorrow will be blue.