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Concrete produced from iron containing industrial tailings

A technology of industrial tailings and concrete, which is applied in the field of concrete, can solve the problems of polluting the environment of mining areas and surrounding areas, encroaching on large land, and forming safety issues, achieving considerable economic benefits, reducing environmental damage, and reducing damage.

Inactive Publication Date: 2016-12-07
山西大地华基建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These tailings will not only occupy a large amount of land, pollute the environment of the mining area and surrounding areas, and cause safety hazards, but also need to invest a lot of money every year to maintain the normal operation of the tailings pool

Method used

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  • Concrete produced from iron containing industrial tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0029] Table 1 lists the proportion of each component of the concrete produced by utilizing iron-containing industrial tailings in the present invention;

[0030] Table 2 lists the workability and compressive strength of a concrete produced from ferrous industrial tailings according to the present invention.

[0031] Table 1 The proportion of each component of a concrete produced from iron-containing industrial tailings in a single concrete (kg / m 3 )

[0032] Example

power level

water-binder ratio

cement

tailings gravel

Tailings sand making

fly ash

finely ground slag powder

Admixture

water

Concrete specific gravity

1

C25

0.51

247

925

925

53

53

7.1

180

2390

2

C30

0.45

280

948

874

60

60

8.0

180

2410

3

C35

0.4

333

957

814

54

63

9.0

180

2410

4

C40

0.37

370

971

763

58

58

10.2

180

2410

...

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Abstract

The invention relates to concrete produced from iron containing industrial tailings. The concrete is prepared from cement, iron containing industrial tailing gravels, iron containing industrial tailing sand, admixture, additive and water. The concrete has the advantages that damage caused by natural sand mining on the ecological environment is reduced by developing and utilizing iron tailings, damage caused by the iron tailings to environment is reduced, waste is made profitable, resource secondary utilization is achieved, the concrete is completely in compliance with the basic state policy of sustainable development and circular economy, and social benefits are remarkable. By developing and utilizing the iron tailings, the concrete cost can be reduced, and considerable economic benefits are produced. Due to the existence of iron elements in the iron tailings, the pressure resistance of the concrete is improved. According to the tax policy of China for comprehensive resource utilization, enterprises using 30% or more of mining barren rock and mill tailings can enjoy the preferential policy of being free of added-value tax, and benefits are more obvious.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to concrete produced by using iron-containing industrial tailings as raw materials. Background technique [0002] Mineral resources are important natural resources for the survival of human society. The development and utilization of mineral resources has provided a huge impetus for social progress, and at the same time, a large number of waste rocks and tailings and other mineral wastes have been discarded; the continuous growth of mineral wastes has brought The pressure of environmental pollution in the future has become a thorny problem affecting my country's construction of a circular economy society and the realization of the strategic goal of sustainable development, which urgently needs to be studied and resolved. [0003] my country is a big mining country, but the grade of most mine resources is low, and a large amount of tailings are discharged in the beneficiation process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/12
CPCC04B18/12C04B28/00C04B2201/50C04B18/08C04B18/141C04B24/24C04B24/383C04B24/287C04B22/002Y02W30/91
Inventor 张真弟张彦鹏赵建强
Owner 山西大地华基建材科技有限公司
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