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Novel low carbon complex cement

A carbon composite and cement technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., to reduce pollution, save production costs, and ensure the pass rate

Inactive Publication Date: 2009-01-07
河南省新雅环保设备工程设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of using coal ash and coal slag to produce cement at present, the invention provides a kind of cement produced by low-carbon pulverized coal slag. Low carbon content and high quality can all be used in the production of cement, thus overcoming the current problem that only 25-50% of fly ash can be used in cement production, thus saving costs and solving the pollution of fly ash accumulation to the environment , to achieve good economic benefits for the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw materials were weighed in proportion: 60 tons of consolidated coal slag, 12 tons of Portland cement clinker, 5 tons of slag, 1 ton of gypsum, 0.4 tons of activator, and 3 tons of quicklime; the formula of the activator is: Na 2 CO 3 0.1 T, sodium sulfate Na 2 SO 4 0.1 ton, sodium hydroxide NaOH 0.1 ton, sodium silicate Na 2 SiO 3 0.1 ton; the raw materials are mixed and ground into powder until the sieve residue of 0.045mm is less than 10%, and the prepared fly ash composite cement reaches the grade standards of 32.5 and 42.5 respectively.

[0031]

Embodiment 2

[0033] Raw materials are weighed in proportion: 65 tons of consolidated coal slag, 15 tons of Portland cement clinker, 10 tons of slag, 1 ton of gypsum, 1 ton of activator, and 3 tons of quicklime; the formula of the activator is: sodium carbonate Na 2 CO 3 0.25 tons, sodium sulfate Na 2 SO 4 0.25 tons, sodium hydroxide NaOH 0.25 tons, sodium silicate Na 2 SiO 3 0.25 tons; the raw materials are mixed and ground into powder until the sieve residue of 0.045mm is less than 10%, and the prepared fly ash composite cement reaches the grade standards of 32.5 and 42.5 respectively.

[0034]

Embodiment 3

[0036] Raw materials were weighed in proportion: 63 tons of consolidated coal slag, 14 tons of Portland cement clinker, 10 tons of slag, 2 tons of gypsum, 1 ton of activator, and 5 tons of quicklime; the formula of the activator is: sodium carbonate Na 2 CO 3 0.25 tons, sodium sulfate Na 2 SO4 0.25 tons, sodium hydroxide NaOH 0.25 tons, sodium silicate Na 2 SiO 3 0.25 tons; the raw materials are mixed and ground into powder until the sieve residue of 0.045mm is less than 10%, and the prepared fly ash composite cement reaches the grade standards of 32.5 and 42.5 respectively.

[0037]

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Abstract

The invention relates to novel low-carbon compound cement, in particular to cement produced with low-carbon consolidation powdered coal dregs produced with a consolidation desulfurizer through burning. The low-carbon compound cement comprises 60 to 85 of consolidation powdered coal dregs,12 to 30 of cement clinker, 5 to 15 of slag, 1 to 8 of plaster, 0.4 to 2 of an excitant and 3 to 15 of quicklime. The excitant in the invention is prepared with the following materials: 0.1 to 0.5 of sodium carbonate Na2CO3, 0.1 to 0.5 of sodium sulfate Na2SO4, 0.1 to 0.5 of sodium hydroxide NaOH and 0.1 to 0.5 of sodium silicate Na2SiO3. The low-carbon powdered coal dregs produced by burning the consolidation desulfurizer can be all applied for production of cement, and the manufacturing cost is saved. Powdered coal is involved so that the powdered coal is used in large quantity and scale, thus significantly reducing the pollution of pulverized fuel ash to the environment. The low-carbon compound cement provided by the invention is favorable for environmental protection and ecological equilibrium.

Description

technical field [0001] The invention relates to a new type of low-carbon composite cement, in particular to a cement produced by using low-carbon consolidating pulverized coal slag generated by burning a consolidating desulfurizer. technical background [0002] 85% of my country's energy structure is coal-fired structure, which produces a large amount of sulfur dioxide harmful gas and coal ash, coal slag. Most coal ash and cinders cannot be comprehensively utilized, and their stockpiling and storage will occupy cultivated land. The leached harmful elements and flying dust will cause serious harm to the surrounding ecological environment. Therefore, comprehensive utilization of fly ash is necessary. People have done a lot of research for this reason, and the coal ash and coal slag after burning are used in cement production, both can reduce environmental pollution, can reduce cement cost again. [0003] Patent application CN91107132.6 discloses a composite cement and its adm...

Claims

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Application Information

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IPC IPC(8): C04B7/24
CPCC04B2111/00017C04B2103/0006C04B28/14Y02W30/91C04B7/02C04B12/04C04B18/06C04B18/08C04B18/141C04B22/062C04B22/064C04B22/10C04B22/147C04B2103/10
Inventor 宋云星侯岛姚曙光
Owner 河南省新雅环保设备工程设计有限公司
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