A kind of composite mineral powder and its preparation method and application

Abstract

The invention discloses compound mineral micro-powder as well as a preparation method and application thereof. The compound mineral micro-powder comprises the following raw materials in parts by weight: 50-80 parts of phosphoric acid residue, 10-25 parts of carbonate, 3-5 parts of a neutralizer and one or combination of 0-12 parts of industrial furnace clinker, 0-5 parts of ardealite and 0-5 parts of anhydrite. According to the preparation method, the industrial waste residue can be utilized, so that the environmental pollution caused by waste residues can be eliminated, and the environmental protection pressure of a factory can be alleviated and even eliminated; and the cost of the compound mineral micro-powder prepared by virtue of the preparation method is lower than that of cement, and at least 30% of cement content can be replaced during the preparation of concrete or mortar, so that the production cost is lowered, and the working performance, the strength and the like of the concrete and the mortar obtained during the replacement of the cement are effectively improved. According to the compound mineral micro-powder, the resources can be adequately utilized, the environment can be optimized, and the sustainable development can be stabilized.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to new building materials, in particular to a high-activity ultrafine phosphorus slag composite mineral micropowder and its preparation method and application. Background technique [0002] Phosphoric acid slag is an acidic waste slag discharged from chemical plants. The content of chromium and phosphorus pentoxide in the waste slag is unstable, which greatly restricts the application of phosphoric acid slag. It is difficult to directly add it to building materials such as cement, mortar or concrete. worked. Contents of the invention [0003] The purpose of the present invention is to provide a kind of composite mineral powder and its preparation method and application, which can make full use of industrial solid wastes such as phosphoric acid slag, slag and phosphogypsum in phosphorus chemical enterprises, realize turning waste into treasure, and realize comprehensive utilization...

AI Technical Summary

Problems solved by technology

[0002] Phosphoric acid slag is an acidic waste slag discharged from chemical plants. The content of chromium and phosphorus pentoxide in the waste slag is unstable, which greatly restricts the application of phosphoric acid slag. It is difficult to directly add it to building materials such as cement, mortar or concrete. worked