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Method for preparing light ceramic particle from pyrite cinder

A technology of pyrite slag and light ceramsite, which is applied in the field of light ceramsite, can solve the problems of reducing production cost, complicated production process, and high energy consumption, and achieves the effect of low cost

Inactive Publication Date: 2013-06-19
云南常青树投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural light aggregate is favored due to its convenient mining, low production energy consumption and low price, but its impurity content is large, and the properties of the finished product fluctuate greatly; artificial light aggregate has good quality, complex production process, high energy consumption and limited by raw materials. Resource limitation; the production process of solid waste light aggregate is the same as that of artificial aggregate, but due to the consumption of cheap waste, it not only reduces production costs, but also turns waste into treasure and has been widely used in production. Therefore, solid waste ceramics Granules have a lot of room for development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing lightweight ceramsite from pyrite slag, comprising the following steps:

[0025] a. Pretreatment: Grind pyrite slag and phosphogypsum to 0.075mm sieve of less than 5% powder respectively, and coal powder to 0.075mm sieve of less than 10% powder; industrial analysis of coal powder: volatilization The content is 17.98%, the fixed carbon is 58.54%, the moisture is 3.5%, and the ash is 19.98%; the same as the following; the main composition and mass percentage of pyrite slag are: SiO 2 31.84%, Al 2 o 3 27.86%, Fe 2 o 3 29.80%, CaO 4.18%; the same below; the main chemical composition and mass percentage of phosphogypsum are: SO 3 49.36%, CaO 36.15%, SiO 2 10.63%; hereinafter the same;

[0026] b. Ingredients: pyrite slag: phosphogypsum mass ratio is 4:1, according to the mixture of pyrite slag and phosphogypsum, coal powder with a mass ratio of 12% is added;

[0027] c. Mixing: Mix pyrite slag and phosphogypsum to make it fully mixed evenly...

Embodiment 2

[0034] A method for preparing lightweight ceramsite from pyrite slag, comprising the following steps:

[0035] a. Pretreatment: Grind pyrite slag and phosphogypsum to a powder with a sieve of less than 5% at 0.075mm, and grind coal powder to a powder with a sieve of less than 10% at 0.075mm;

[0036] b. Ingredients: pyrite slag: phosphogypsum mass ratio is 4:1, according to the mixture of pyrite slag and phosphogypsum, coal powder with a mass ratio of 12% is added;

[0037] c. Mixing: Mix pyrite slag and phosphogypsum to make it fully mixed evenly, then add coal powder and mix evenly to prepare a mixture;

[0038] d. Forming: Add proper amount of water to the mixture until the mixture can be kneaded into a ball by hand, and then formed into balls manually or mechanically, with a particle size of 10-15mm;

[0039] e. Firing process: Dry the molding ball at 105°C for 2 hours, then raise the temperature to 400°C at a rate of 6°C / min, and immediately transfer it to a medium-tempe...

Embodiment 3

[0044]A method for preparing lightweight ceramsite from pyrite slag, comprising the following steps:

[0045] a. Pretreatment: Grind pyrite slag and phosphogypsum to a powder with a sieve of less than 5% at 0.075mm, and grind coal powder to a powder with a sieve of less than 10% at 0.075mm;

[0046] b. Ingredients: pyrite slag: phosphogypsum mass ratio is 4:1, according to the mixture of pyrite slag and phosphogypsum, 4% coal powder is added;

[0047] c. Mixing: Mix pyrite slag and phosphogypsum to make it fully mixed evenly, then add coal powder and mix evenly to prepare a mixture;

[0048] d. Forming: Add proper amount of water to the mixture until the mixture can be kneaded into a ball by hand, and then formed into balls manually or mechanically, with a particle size of 10-15mm;

[0049] e. Firing process: Dry the molding ball at 105°C for 2 hours, then raise the temperature to 400°C at a rate of 6°C / min, and immediately transfer it to a medium-temperature furnace at 900°C...

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Abstract

The invention provides a method for preparing light ceramic particle from pyrite cinder. The method comprises the following steps: 1) pretreating; 2) preparing materials; 3) mixing; 4) forming; 5) firing; and 6) preparing a finished product. The light ceramic particle prepared by the preparation method has low cost and can be used for preparing light concrete, heat insulation mortar, heat insulation loose filling material and refractory concrete, and by the adoption of the method, wastes are turned into wealth.

Description

technical field [0001] The invention belongs to a method for preparing light ceramsite used as building materials such as concrete or artificial stone by using waste sintering materials, and relates to a method for preparing light ceramsite from pyrite slag. The prepared lightweight ceramsite aggregate is especially suitable for preparing lightweight concrete and can also be used in other lightweight building materials. Background technique [0002] Pyrite cinder is a waste residue discharged from the process of using pyrite to prepare sulfuric acid or sulfur. my country is rich in pyrite resources, accounting for 10% of the world's total reserves, ranking third. Only the original Liupanshui economic zone in southern Sichuan, northern Yunnan, and western Guizhou has a resource reserve of 6.5 billion tons of pyrite resources and a prospective reserve of 40 billion tons or more, but most of the pyrites in my country are of medium and low grade, with an average geological grade...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00B09B3/00
Inventor 严云倪天银黄昱霖胡志华
Owner 云南常青树投资有限公司
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