Refractory insulation brick made by utilizing coal ash

Abstract

The invention relates to a refractory insulation brick, in particular to a refractory insulation brick made by utilizing coal ash. The refractory insulation brick is prepared by the following raw materials in parts by weight: 40 parts of microballon, 25 to 35 parts of high alumina, 15 to 25 parts of water, 20 parts of expanded perlite and 30 to 160 parts of waste bubble, wherein a binding agent is the high alumina, refractory clay, kaolin, mica, aluminate and organic or inorganic polymer. In the refractory insulation brick made by coal ash, the source of the adopted microballon is the microballon extracted from solid waste coal ash existing in all parts with the relative density larger than 1, and the materials are easy to obtain, are cheap, and can completely substitute non-renewable resources. The invention has low production cost, and the manufactured refractory insulation brick coincides with the relevant provisions of the national standards.

Description

technical field [0001] The invention relates to a fire-resistant and heat-insulating brick, in particular to a fire-resistant and heat-insulating brick made of fly ash. Background technique [0002] The current annual emission of fly ash in my country is 107 million tons. With the continuous increase of new and expanded power plants, it is estimated that the discharge of fly ash will reach 160 million tons by 2000. Although the utilization rate of fly ash has increased from 20% to 30% during the "Sixth Five-Year Plan" and "Seventh Five-Year Plan", The technical level is also constantly improving, but at present, my country's fly ash utilization technology and equipment are still relatively backward, and the comprehensive utilization work is also very unbalanced, so the cumulative stockpile of fly ash that has not been used for many years has reached more than 500 million tons, covering an area of ​​200,000 mu, posing a great threat to the ecological environment. Therefore, i...

AI Technical Summary

Problems solved by technology

With the continuous increase of new and expanded power plants, it is estimated that the discharge of fly ash will reach 160 million tons by 2000. Although the utilization rate of fly ash has increased from 20% to 30% during the "Sixth Five-Year Plan" and "Seventh Five-Year Plan", The technical level is also constantly improving, but at present, my country's fly ash utilization technology and equipment are still relatively backward, and the comprehensive utilization work is also very unbalanced, so the cumulative stockpile of fly ash that has not been used for many years has reached more than 500 million tons, covering an area of ​​200,000 mu, posing a great threat to the ecological environment