Preparation of aluminate cement clinker by replacing part of high alumina bauxite with aluminum ash
Date: 2021-11-16 09:58:53 Source: admin Views: 147
Aluminum ash is a solid waste discharged by the aluminum and aluminum product processing industry. It has a high content of effective aluminum components (aluminum element and alumina), which has the potential to replace high-bauxite.
(1) As the amount of aluminum ash added increases, the sinterability of aluminate cement raw meal can be improved, the absorption of free calcium oxide can be promoted, and the energy consumption of sintering can be reduced.
(2) When the rate value is equal, the clinker prepared by replacing high alumina bauxite with aluminum ash will inhibit the formation of early-strength mineral CA and increase mineral CA2.
(3) The performance of clinker prepared by partially replacing high alumina bauxite with aluminum ash meets the requirements of the standard GB/T 201-2015 "Aluminate Cement" CA50-I.
Due to the special properties and uses of aluminate cement, the chemical composition of alumina fume is similar to that of bauxite, but due to the large differences in the composition of various alumina fume, there will be many changes in the mineral composition of the prepared aluminate cement clinker Therefore, the preparation of aluminate cement with aluminum fume needs further research.
In summary, using aluminum ash to replace part of high alumina bauxite to prepare aluminate cement can not only reduce the production cost of aluminate cement, but also reduce the environmental pollution of aluminum ash and realize comprehensive utilization of resources.
