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Iron tailing ceramsite for building material and preparation method thereof

A technology for building materials and iron tailings, which is applied to the field of iron tailings ceramsite for building materials and its preparation, can solve problems such as environmental pollution of iron tailings, and achieve the effects of fewer types of raw materials, high particle strength and high bulk density.

Inactive Publication Date: 2019-07-30
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a kind of iron tailings ceramsite for building materials and its preparation method, aiming at solving the problem of iron tailings polluting the environment, and providing high-strength ceramsite for the construction industry

Method used

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  • Iron tailing ceramsite for building material and preparation method thereof
  • Iron tailing ceramsite for building material and preparation method thereof

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preparation example Construction

[0031] The preparation method of iron tailings ceramsite for building materials is described below to further set forth the technical scheme of the present invention, see figure 1 , the preparation method comprises the following steps:

[0032] S1: The iron tailings are screened to obtain iron tailings powder; the iron tailings can specifically be the iron tailings powder obtained by screening through a 100-200 mesh sieve. The diameter is 106 microns) and screened to obtain iron tailings powder. The screened iron tailings powder is easier to mix evenly with fly ash, so that the performance of the prepared iron tailings ceramsite for building materials is better.

[0033] S2: Mix iron tailings powder and fly ash in proportion and add appropriate amount of deionized water. Specifically, it can be mixed according to the ratio of 300ml to 340ml of deionized water per 90g to 110g of the mixture. In the preferred solution, add 320ml of deionized water was mixed, stirred again and ...

Embodiment 1

[0040] In parts by weight: 84 parts of iron tailings, 16 parts of fly ash, of which Al 2 o 3 The mass percentage is 14%.

[0041] The iron tailings raw material is screened through a 150-mesh sieve to obtain iron tailings powder, and 84 parts of iron tailings powder and 16 parts of fly ash are evenly mixed. Add an appropriate amount of deionized water to the uniformly mixed solid raw material, specifically according to the ratio of 320ml of water per 100g of solid raw material. After the addition of deionized water is completed, stir again to obtain ceramsite raw meal.

[0042] Then, put the ceramsite raw material into a mold and extrude it into a raw material ball with a diameter of 10 mm.

[0043] Subsequently, the raw meal balls are placed in the air to dry in the shade for 6-10 hours, and then the dried raw meal balls are put into an oven at a temperature of 105° C. to dry for 8-10 hours.

[0044]Next, take out the raw meal balls in the oven, put them into a resistance ...

Embodiment 2

[0048] In parts by weight: 65 parts of iron tailings, 35 parts of fly ash, of which Al 2 o 3 The mass percentage is 20%.

[0049] The iron tailings raw material is screened through a 150-mesh sieve to obtain iron tailings powder, and 65 parts of iron tailings powder and 35 parts of fly ash are evenly mixed. Add an appropriate amount of deionized water to the uniformly mixed solid raw material, specifically according to the ratio of 320ml of water per 100g of solid raw material. After the addition of deionized water is completed, stir again to obtain ceramsite raw meal.

[0050] Then, put the ceramsite raw material into a mold and extrude it into a raw material ball with a diameter of 10 mm.

[0051] Subsequently, the raw meal balls are placed in the air to dry in the shade for 6-10 hours, and then the dried raw meal balls are put into an oven at a temperature of 105° C. to dry for 8-10 hours.

[0052] Next, take out the raw meal balls in the oven, put them into a resistance...

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Abstract

The invention relates to the technical field of ceramsite preparation, in particular to an iron tailing ceramsite for a building material, which comprises, by mass, the following raw materials: 34-84parts of iron tailings and 16-66 parts of fly ash; wherein the mass percentage of alumina in the raw material of the iron tailing ceramsite for the building material is 14-30%. In addition, the invention also provides a preparation method of the iron tailing ceramsite for the building material. The method comprises the following steps of: mixing iron tailing powder and the fly ash in proportion, adding deionized water, and stirring a ceramsite raw material; preparing the ceramsite raw material into raw material balls; drying the raw material balls; putting the dried raw material balls into a resistance furnace for grading roasting; cooling the raw material balls after the grading roasting along with the furnace to obtain a finished product of the iron tailing ceramsite for the building material. Compared with the prior art, the iron tailing ceramsite for the building material has the advantages of high strength, simpler preparation process, less required material types, no pollution tothe environment and low production cost.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of iron tailings resources and lightweight building aggregates, in particular to an iron tailings ceramsite for building materials and a preparation method thereof. Background technique [0002] Iron tailings are the waste after mineral processing and are the main component of industrial solid waste. However, according to incomplete statistics in recent years, more than 10 billion tons of tailings and waste rocks are discharged in the world every year. There are nearly 5 billion tons of tailings stockpiled in my country, and the annual discharge of tailings is as high as 500 million tons or more. However, the comprehensive utilization rate of tailings in my country is only about 7%. [0003] Discarding the tailings not only takes up a lot of land and causes great damage to the surrounding ecological environment, but also requires investment in treatment and maintenance costs. The compre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/02C04B35/622
CPCC04B18/027C04B35/622C04B35/62204C04B2235/602C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96
Inventor 吴俊权汪应玲罗绍华马晶赵宇轩陈帆孙利军董琳
Owner 东北大学秦皇岛分校