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A kind of black composite portland cement and production method thereof

A technology for compounding silicate and portland cement, applied in the direction of cement production and the like, can solve the problems of unfavorable popularization and application of black cement, difficulty in clinker production, complicated process, etc., and achieve favorable popularization and use, low cost, and production technology. simple effect

Active Publication Date: 2015-10-07
KUNMING IRON & STEEL HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The current method of producing black cement is made by grinding white Portland cement clinker, high-quality white gypsum and carbon black. Produced by professional manufacturers, the process is complicated, the output is low, and the cost is high, which is not conducive to the promotion and application of black cement

Method used

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  • A kind of black composite portland cement and production method thereof
  • A kind of black composite portland cement and production method thereof
  • A kind of black composite portland cement and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Manufacturers with ordinary Portland cement and composite Portland cement production, according to the mass percentage of 62% Portland cement clinker, 20% ordinary coal-fired boiler slag, 5% blast water quenching antimony slag, 8% Clay slag and 5% gypsum are prepared as raw materials, which are measured and transported to the cement mill batching bin according to the above proportions for homogenization and storage, and then transported to a ball mill for grinding until the specific surface area is greater than 350m 2 / kg or 0.08mm sieve is less than 4%, the ground cement is transported to the cement warehouse for storage, and is packed and shipped by a packaging machine or shipped in bulk.

Embodiment 2

[0033] For manufacturers with ordinary Portland cement and composite Portland cement, according to the mass percentage of 75% Portland cement clinker, 13% power station circulating fluidized bed slag, 3% blast furnace water-quenched antimony slag, 5% % of clay slag and 4% of gypsum are prepared as raw materials, which are measured and transported to the cement mill batching bin according to the above proportions for homogenization and storage, and then transported to the vertical mill for grinding until the specific surface area is greater than 350m 2 / kg or 0.08mm sieve is less than 2%, the ground cement is transported to the cement warehouse for storage, and is packaged and shipped by a packaging machine or shipped in bulk.

Embodiment 3

[0035] Manufacturers with the production of ordinary Portland cement and composite Portland cement prepare materials according to the mass percentage of 70% Portland cement clinker and 5% gypsum, and then measure and transport them to the ball mill for grinding until the specific surface area is greater than 350m 2 / kg or 0.08mm to sieve less than 3% clinker powder; according to the mass percentage of 15% boiling slag, 4% blast furnace water-quenched antimony slag, and 6% tile slag raw materials, they are then transported to the vertical mill by weighing scales Machine grinding until the specific surface area is greater than 350m 2 / kg or 0.08mm to sieve the mixed powder less than 3%; finally, mix and homogenize the clinker powder and the mixed powder to obtain cement powder, which is then transported to the cement warehouse for storage, and is packed and shipped by a packaging machine or shipped in bulk.

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Abstract

The invention discloses a black composite portland cement and a production method thereof. The black composite portland cement includes by weight: 60-75% of portland cement clinker, 10-20% of boiler slag, 3-5% of antimony slag, 5-8% of tile slag, and 3-5% of gypsum, and the weight percentage sum of each component is not more than 100%. The production method includes grinding and homogenizing 60-75 wt% of portland cement clinker, 10-20 wt% of boiler slag, 3-5 wt% of antimony slag, 5-8 wt% of tile slag, and 3-5 wt% of gypsum. The cement of the invention is based on portland cement clinker, and is produced by grounding boiler slag, antimony slag, tile slag and other production waste and part of gypsum. The black composite portland cement has the characteristics of lower burdening requirement and easier acquirement compared with conventional white cement-based black cement, light weight, and stable color. The production method has the characteristics of simple process, high yield, environmental protection and energy saving, and low production cost.

Description

technical field [0001] The invention belongs to the technical field of cement production, and in particular relates to a black composite Portland cement and a production method thereof. Background technique [0002] Cement is a powdery hydraulic inorganic gelling material, which can be divided into general-purpose cement and special-purpose cement according to its use and performance. General-purpose cement mainly refers to: the six types of cement specified in GB175-2007, namely Portland cement, ordinary Portland cement, slag Portland cement, pozzolanic Portland cement, fly ash Portland cement and composite cement. Portland cement; special cement refers to cement for special purposes, mainly including: [0003] (1) White Portland cement (referred to as white cement): calcium silicate as the main component, clinker with low iron content is added with an appropriate amount of gypsum, and the white hydraulic cementitious material is made by fine grinding. [0004] The raw ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/28
CPCY02P40/10
Inventor 宋华张建德
Owner KUNMING IRON & STEEL HLDG CO LTD
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