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Method of producing environmental friendly active cement-based composite material by utilization of iron-nickel alloy tailings

A nickel-iron alloy and composite material technology, applied in cement production, clinker production and other directions, can solve the problems of low production volume of ultra-fine fly ash, high price, shortage of supply, etc., to improve the comprehensive utilization rate of resources, The effect of reducing segregation and bleeding, reducing temperature difference and internal pressure

Inactive Publication Date: 2014-11-26
把正春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of raw materials, the production of steel water slag fine powder and thermal power plant ultrafine fly ash is extremely small (about 150,000-200,000 tons of water slag fine powder and about 100,000 tons of ultrafine fly ash), which makes the price of cement-based composite materials It has remained high, which not only limited the application of this material to high-strength concrete, but also caused a shortage of supply during the construction period.

Method used

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  • Method of producing environmental friendly active cement-based composite material by utilization of iron-nickel alloy tailings
  • Method of producing environmental friendly active cement-based composite material by utilization of iron-nickel alloy tailings
  • Method of producing environmental friendly active cement-based composite material by utilization of iron-nickel alloy tailings

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Experimental program
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Effect test

Embodiment 1

[0029] like figure 1 As shown, the method of utilizing nickel-iron alloy tailings to produce environment-friendly active cement-based composite material of the present invention comprises the following specific steps:

[0030] 1. Collect the nickel-iron alloy tailings, crush it, dry it, and then grind it to obtain the nickel-iron alloy powder. Put the nickel-iron alloy powder into the powder bin for use.

[0031] 2. Grind the cement clinker into clinker powder and put it into the clinker bin for use.

[0032] 3. Dry the fly ash to obtain dry fly ash, and put it into the fly ash bin for use.

[0033] 4. Put the activator into the activator tank for use.

[0034] 5. Put 3% nickel-iron alloy powder, 3% clinker powder, 3% dry fly ash and 3% activator into the mixing system for mixing, and the product is obtained after mixing evenly.

[0035] The activity index and fluidity ratio of the product were tested, and the results are shown in Table 1.

[0036] Table 1 Test results of ...

Embodiment 2

[0043] like figure 1 As shown, the method of utilizing nickel-iron alloy tailings to produce environment-friendly active cement-based composite material of the present invention comprises the following specific steps:

[0044] 1. Collect the nickel-iron alloy tailings, crush it, dry it, and then grind it to obtain the nickel-iron alloy powder. Put the nickel-iron alloy powder into the powder bin for use.

[0045] 2. Grind the cement clinker into clinker powder and put it into the clinker bin for use.

[0046] 3. Dry the fly ash to obtain dry fly ash, and put it into the fly ash bin for use.

[0047] 4. Put the activator into the activator tank for use.

[0048] 5. Put 5% nickel-iron alloy powder, 5% clinker powder, 5% dry fly ash and 5% activator into the mixing system for mixing, and the product is obtained after mixing evenly.

[0049] The activity index and fluidity ratio of the product were tested, and the results are shown in Table 2.

[0050] Table 2 Test results of ...

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Abstract

The invention discloses a method of producing an environmental friendly active cement-based composite material by utilization of iron-nickel alloy tailings. The method is characterized in that: the composite material is prepared by mixing 3-5% of iron-nickel alloy powder, 3-5% of clinker powder, 3-5% of dry coal ash and 3-5% of an activator. The beneficial effects of the method are that: addition of the iron-nickel alloy tailings into the cement clinker after the iron-nickel alloy tailings are modified by processing and activation is simple and easy to operate; the method plays a positive role for recycling of industrial solid waste, improvement of the comprehensive utilization rate of resources, and saving and reasonable effective utilization of the resources; and the obtained cement-based composite material is capable of 1) enhancing mechanical properties of concrete, 2) reducing the engineering cost of cement and concrete, 3) significantly reducing heat of hydration of concrete, improving concrete workability, reducing segregation and water bleeding, reducing temperature changes and internal pressure of large-volume concrete, and inhibiting cracks generated by temperature differences, 4) inhibiting concrete alkali-aggregate reactions, and 5) having a micro-aggregate effect.

Description

technical field [0001] The invention relates to a method for producing cement-based composite materials, in particular to a method for producing environment-friendly active cement-based composite materials by using nickel-iron alloy tailings, and belongs to the technical field of new environment-friendly building materials industry and resource comprehensive utilization. Background technique [0002] Thermal power, metallurgical and other enterprises produce a large amount of nickel-iron alloy tailings and other industrial wastes every year. Production enterprises usually dispose of them by landfilling. Due to the large amount of emissions, they have caused a large environmental load. [0003] Cement-based composite materials refer to materials with strong performance obtained by combining cement as a matrix with other materials. [0004] At present, taking Qinghai Province as an example, the only cement-based composite materials on the market are the slag after the iron and...

Claims

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Application Information

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IPC IPC(8): C04B7/26C04B7/147C04B7/38
CPCY02P40/10Y02P40/121
Inventor 把正春
Owner 把正春
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