Color cement made from copper-smelting slag

Abstract

Colored cement produced by copper-smelting slag is characterized by comprising portland cement clinker 525<#>, copper-smelting slag, lime, fly ash, plaster, composite excitant, paint and cement intensifier, wherein, the composite excitant consists of dead plaster and active aluminium silicon; cement intensifier consists of aluminium sulphate, silicon dioxide, alumina and common salt. The invention mixes a little amount of low-active copper-smelting slag in the cement composite material, and then adds additives such as the lime, the fly ash, the composite excitant, the cement intensifier and the like to excite the activity of the copper-smelting slag, thus preparing the bright, even and various colored cement which has the characteristics of saving energy, reducing discharge, having simple technique, reducing the cement cost, and the like.

Description

technical field [0001] The invention relates to cement, in particular to a colored cement produced from copper smelting slag, which belongs to the cement production technology. Background technique [0002] Colored cement is a new type of building material. At present, the manufacturing process of colored cement can be divided into two categories: the colored cement made by mixing white cement with coloring agent and the colored cement made by calcining raw materials and clinker and aging. These two kinds of methods raw material source are little, and cost is higher. The copper smelting slag is the waste produced when the pyrometallurgy produces blister copper. The activity of the copper smelting slag is low, and its main components are low in silicon, calcium, and aluminum oxides, so it cannot be used as a cement mixture. A large amount of copper smelting slag cannot be discharged, so it has to occupy farmland, forests and cause environmental pollution. Contents of the i...

AI Technical Summary

Problems solved by technology

These two methods have small source of raw materials and high cost

The copper smelting slag is the waste produced when the pyrometallurgy produces blister copper. The activity of the copper smelting slag is low, and its main components are low in silicon, calcium, and aluminum oxides, so it cannot be used as a cement mixture. A large amount of copper smelting slag cannot be discharged, so it has to occupy farmland, forests and cause environmental pollution