Industrial waste slag-doped composite silicate cement and production method thereof

A technology of composite Portland and Portland cement, which is applied in the direction of cement production, can solve the problems of low utilization rate of waste residue, unstable cement quality, out-of-sync hydration progress, etc., and achieve a wide range of waste utilization, solidification and hardening The effect of fast speed and comprehensive power consumption reduction

Inactive Publication Date: 2011-06-22
王明贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, we can easily see the following deficiencies in the existing disclosed technology of utilizing industrial waste slag to produce composite Portland cement: 1. There are few types of industrial waste slag mixed in, mainly granulated blast furnace slag and fly ash; 2. The

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take Portland cement clinker 58kg, limestone 3.7kg, desulfurization gypsum 3kg, cement grinding aid 0.3kg, mix and grind until the specific surface area is 350m 2 / kg of powder; take 12kg of granulated blast furnace slag, 5kg of coal slag, 2kg of coal gangue, 5.8kg of fly ash, 5kg of ferroalloy slag, 5kg of zinc metallurgical slag, and 0.2kg of waste slag grinding active activator, and grind to The specific surface area is 450m 2 / kg superfine composite mixture powder; then mix the two kinds of powder, and use automatic pneumatic homogenization to become P·C42.5R cement. After testing, its various quality indicators have reached or even exceeded GB175-2007.

Embodiment 2

[0028] Take Portland cement clinker 50kg, limestone 3kg, desulfurization gypsum 3kg, cement grinding aid 0.25kg, mix and grind until the specific surface area is 350m 2 / kg of powder; take 15kg of granulated blast furnace slag, 3kg of coal slag, 2kg of coal gangue, 5kg of fly ash, 10kg of ferroalloy slag, 8.5kg of zinc metallurgical slag, and 0.25kg of waste slag grinding active stimulator, after mixing Grinding to a specific surface area of ​​450m 2 / kg superfine composite mixture powder; then mix the two kinds of powder, and use automatic pneumatic homogenization to become P·C42.5 cement. After testing, its various quality indicators have reached or even exceeded GB175-2007.

Embodiment 3

[0030] Take 45kg of Portland cement, 1.75kg of limestone, 3kg of desulfurized gypsum, and 0.25kg of cement grinding aid, mix and grind until the specific surface area is 350m 2 / kg of powder; take 22kg of granulated blast furnace slag, 61.75kg of coal slag, 1.75kg of coal gangue, 10kg of fly ash, 5kg of ferroalloy slag, 5kg of zinc metallurgical slag, and 0.25kg of waste slag grinding-aiding active activator. Grind until the specific surface area is 450m 2 / kg superfine composite mixture powder; then mix the two kinds of powders and use automatic pneumatic homogenization to become P·C32.5R cement, which can reach P·C32.5R cement through testing. After testing, its various quality indicators have reached or even exceeded GB175-2007.

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Abstract

The invention discloses industrial waste slag-doped composite silicate cement and a production method thereof. The industrial waste slag-doped composite silicate cement comprises the following material components: 45-58 percent of silicate cement clinker, 3-5 percent of desulfurization gypsum, 1.5-4 percent of lime stone, 0.2-0.3 percent of cement grinding additive, 10-29 percent of granulated blast furnace slag, 2-10 percent of coal slag, 4-10 percent of pulverized fuel ash, 2-10 percent of ferroalloy slag, 2-10 percent of zinc metallurgical slag and 0.2-0.25 percent of waste slag grinding aid active excitant. The production method comprises the following steps of: taking and mixing the first four materials according to the proportion and grinding into 300-350m<2>/kg of powder; taking and mixing the rest six materials according to the proportion and grinding into 420-450m<2>/kg of superfine powder; and then combining the two kinds of powder, stirring and homogenizing. By adopting respective grinding of clinker and waste slag, the waste slag fineness reaches an optical value for stimulating the activity, the hydration progress and the cement clinker reach synchronization, and the doping amount and doping category of waste slag are also improved.

Description

technical field [0001] The invention belongs to the technical field of cement production, and relates to a composite Portland cement and a production method thereof, in particular to a composite Portland cement produced by utilizing industrial waste residues, and a production method of the cement. Background technique [0002] The use of industrial waste residues to produce composite Portland cement not only conforms to the concept of environmental protection, but also has the positive effect of turning waste into treasure and reducing production costs. At present, some cement production enterprises have successfully mixed some industrial waste residues into cement clinker to produce composite Portland cement. However, we can easily see the following deficiencies in the existing disclosed technology of utilizing industrial waste slag to produce composite Portland cement: 1. There are few types of industrial waste slag mixed in, mainly granulated blast furnace slag and fly as...

Claims

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Application Information

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IPC IPC(8): C04B22/14C04B7/153
CPCC04B7/527C04B7/21C04B7/243Y02P40/10C04B7/522
Inventor 王明贵宁纪华刘建华
Owner 王明贵
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