CN101954666A - Method for preparing aerated bricks - Google Patents

Abstract

The invention discloses a method for preparing aerated bricks. The method is characterized by comprising the following steps of: processing gold tailings, preparing the raw materials of the aerated bricks, pouring, steaming and cutting blanks, steaming at a high temperature, forming products and the like. The method is environmentally-friendly, prolongs the service life of the bricks, and is particularly suitable for the comprehensive utilization of the gold tailings.

Description

A kind of preparation method of aerating brick

Technical field:

The present invention relates to a kind of preparation method of brick, particularly a kind of preparation method of aerating brick.

Background technology:

The CHARACTERISTICS OF TAILINGS SAND that China's gold industry produces mostly adopts the method for open-air placement, and so long-time placement has taken the soil, has polluted underground water, and is very serious to the pollution of environment.

The enterprise that has at present utilizes the brickmaking of gold tailings sand, though solved the problem of environmental pollution of CHARACTERISTICS OF TAILINGS SAND, but mine tailing is not handled, contain some insalubrious materials such as iron, sulphur, mercury in the middle of these mine tailings, the water-soluble generation sulfuric acid of sulphur, the iron time is long water-soluble, and the generation iron oxide exerted an influence to the life-span of brick, like this environment had been caused destruction equally.

Summary of the invention:

Purpose of the present invention just provides a kind of preparation method who environment is not had the aerating brick of pollution, environmental protection.

The object of the present invention is achieved like this: a kind of preparation method of aerating brick is characterized in that it is finished by following steps:

1), gold tailings processing: at first gold tailings is added water and in ball crusher, grind, grind to form granularity to the ore pulp more than 200 orders, the gold tailings fine sand accounts for ore pulp 70%, extract iron ore concentrate by magnetic separator again, the ore pulp of mover iron concentrate extracts the sulphur concentrate by flotation device again, obtains CHARACTERISTICS OF TAILINGS SAND through concentrating to anhydrate;

2), aerating brick raw material preparation: CHARACTERISTICS OF TAILINGS SAND and lime, cement, water, the aluminium powder that will remove iron sulphur proportionally carry out mixing and stirring, obtain the ore pulp of aerating brick standard;

3), cast idiosome: the ore pulp that makes is cast in the stock mould, obtains the brick idiosome;

4), steam-cured idiosome: idiosome is put in the steam-cured chamber steam-cured, when steam-cured room temperature was 50 ℃-60 ℃, the steam-cured time was 3-4 hour, obtained steam-cured good idiosome;

5), cut idiosome: steam-cured good idiosome is put into is processed into fragment of brick on the cutting machine;

6), high-pressure steaming and cultivating: fragment of brick put into carry out steam-curedly in the high pressure still kettle, steam-cured temperature is 193 ℃-200 ℃, time 12-13 hour, pressure 11-13 MPa;

7), form product: the fragment of brick in still kettle is removed pressure, lowered the temperature, goes out still, obtain product.

The present invention has the following advantages compared with prior art:

Owing to adopt several steps such as gold tailings processing, the preparation of aerating brick raw material, cast idiosome, steam-cured idiosome, cutting idiosome, high-pressure steaming and cultivating, formation product, some insalubrious materials such as containing iron, sulphur, mercury in the middle of the mine tailing are extracted, the aerating brick environmental protection of making, to environment without any secondary pollution, the service life of having strengthened brick.

The specific embodiment:

1), gold tailings processing: at first gold tailings is added water and in ball crusher, grind, grind to form granularity to the ore pulp more than 200 orders, the gold tailings fine sand accounts for ore pulp 70%, extract iron ore concentrate by magnetic separator again, the ore pulp of mover iron concentrate extracts the sulphur concentrate by flotation device again, obtains CHARACTERISTICS OF TAILINGS SAND through concentrating to anhydrate;

2), aerating brick raw material preparation: CHARACTERISTICS OF TAILINGS SAND and lime, cement, water, the aluminium powder that will remove iron sulphur carry out mixing and stirring according to weight with 48%, 14%, 3%, 34.95%, 0.05% ratio, obtain the ore pulp of aerating brick standard;

3), cast idiosome: the ore pulp that makes is cast in the stock mould, obtains the brick idiosome;

4), steam-cured idiosome: idiosome is put in the steam-cured chamber steam-cured, when steam-cured room temperature was 50 ℃-60 ℃, the steam-cured time was 3-4 hour, obtained steam-cured good idiosome;

5), cut idiosome: steam-cured good idiosome is put into is processed into fragment of brick on the cutting machine;

6), high-pressure steaming and cultivating: fragment of brick put into carry out steam-curedly in the high pressure still kettle, steam-cured temperature is 193-200 ℃, time 12-13 hour, pressure 11-13 MPa;

7), form product: the fragment of brick in still kettle is removed pressure, lowered the temperature, goes out still, obtain product.

Claims (1)

1. the preparation method of an aerating brick is characterized in that it is finished by following steps:

1), gold tailings processing: at first gold tailings is added water and in ball crusher, grind, grind to form granularity to the ore pulp more than 200 orders, the gold tailings fine sand accounts for ore pulp 70%, extract iron ore concentrate by magnetic separator again, the ore pulp of mover iron concentrate extracts the sulphur concentrate by flotation device again, obtains CHARACTERISTICS OF TAILINGS SAND through concentrating to anhydrate;

2), aerating brick raw material preparation: CHARACTERISTICS OF TAILINGS SAND and lime, cement, water, the aluminium powder that will remove iron sulphur proportionally carry out mixing and stirring, obtain the ore pulp of aerating brick standard;

3), cast idiosome: the ore pulp that makes is cast in the stock mould, obtains the brick idiosome;

4), steam-cured idiosome: idiosome is put in the steam-cured chamber steam-cured, when steam-cured room temperature was 50 ℃-60 ℃, the steam-cured time was 3-4 hour, obtained steam-cured good idiosome;

5), cut idiosome: steam-cured good idiosome is put into is processed into fragment of brick on the cutting machine;

6), high-pressure steaming and cultivating: fragment of brick put into carry out steam-curedly in the high pressure still kettle, steam-cured temperature is 193 ℃-200 ℃, time 12-13 hour, pressure 11-13 MPa;

7), form product: the fragment of brick in still kettle is removed pressure, lowered the temperature, goes out still, obtain product.