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Artificial diopside material and its preparation method

A diopside and man-made technology, applied in the field of mineral materials, can solve the problems of patent applications or literature reports of artificially produced pure diopside materials, etc., and achieve the effects of high crystallinity, high crystal phase purity and high degree of weathering

Inactive Publication Date: 2008-07-02
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] After searching, no patent application or literature report on the artificial production of pure diopside material was found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The present invention is a process for preparing artificial diopside plates with natural minerals as main raw materials. The process uses silica sand, albite, limestone, dolomite, fluorite, titanium slag, zinc oxide, zirconia, aluminum phosphate, Graphite is raw material, according to following chemical composition carries out batching (weight percentage): SiO 2 49.14%, Al 2 o 3 7.52%, CaO 17.11%, MgO 5.84%, TiO 2 10.07%, NaO 2 +KO 2 4.96%, ZrO 2 1.50%, ZnO 2.00%, P 2 o 5 1.49%, F 1.00%, plus 1% graphite powder. The moisture content of the batch material is 4%, and after being mixed evenly, it is put into a melting furnace for melting, and the melting temperature is controlled at 1450±5°C. After the high-temperature melted, clarified and homogenized melt is pressed into a plate, the plate is moved into an annealing furnace heated to 600°C for annealing for 2 hours, and then the semi-finished product obtained through the above steps is moved into the crystal...

Embodiment 2

[0025] A process for preparing artificial diopside profiles of the present invention, the process uses pyrite tailings, kaolin, limestone, dolomite, soda ash, fluorite, zinc oxide, zirconia, aluminum phosphate, and graphite as raw materials. The batching that forms has following chemical composition (percentage by weight): SiO 249.60%, Al 2 o 3 7.90%, CaO 17.10%, MgO 5.80%, TiO 2 10.10%, NaO 2 5.00%, ZrO 2 1.50%, ZnO 2.00%, P 2 o 5 1.50%, F 1.00%, plus 1% graphite powder. The moisture content of the batch material is 4%, and after being mixed evenly, it is put into a melting furnace for melting, and the melting temperature is controlled at 1450±5°C. Pour the high-temperature melted, clarified and homogenized melt into a groove-shaped mold to form a groove-shaped profile, then move it into a crystallization furnace, raise the temperature to 700°C at a speed of 2-3°C / min, keep it for 2 hours, and then The temperature was raised to 950°C at a high speed, kept for 2 h...

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Abstract

The present invention is artificial pure diopside crystal material and its preparation process. The artificial diopside crystal material is prepared with silica sand, tail pyrite, kaolin, albite, limestone and other mineral materials, and through the technological steps of compounding material, smelting, forming, annealing, coring, crystallization, etc. Chemically, the materials consist of SiO2 47-61 wt%, Al2O3 4-9 wt%, CaO 12-20 wt%, MgO 4-7 wt%, TiO2 2-15 wt%, NaO2+KO2 3-7 wt%, ZrO2 1-4 wt%, ZnO 0-4 wt%, P2O5 1-4 wt%, F 1-3 wt% and C 1-3 wt%. The artificial pure diopside crystal material consists of micron level crystal grains, and has high compactness, high mechanical performance, high wear resistance, high corrosion resistance, excellent impact performance, no radioactivity and other features.

Description

technical field [0001] The invention relates to an artificial diopside profile and a preparation method thereof, in particular to a process for preparing diopside profiles using natural minerals other than diopside as main raw materials. The invention belongs to the field of mineral materials. Background technique [0002] Diopside is a single-chain silicate mineral with the structural formula CaMg[Si 2 o 6 ], where Mg 2+ Can often be replaced by other ions, such as Fe 2+ , Fe 3+ 、Al 3+ 、Cr 3+ etc., thus forming Ca(Mg 2+ , Fe 2+ , Fe 3+ , Al 3+ )[Si 2 o 6 ] of solid solution. The theoretical chemical composition of diopside is SiO 2 55.6%, CaO 25.9%, MgO 18.5%, belongs to the monoclinic crystal system, the crystal is short columnar, the aggregate is granular or radial, mostly light green or light gray, glass luster, hardness 5.5-6, melting point 1391 ℃, insoluble Soluble in water and hydrochloric acid, density 3.27~3.38g / cm 3 . Natural diopside often contai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B14/04
Inventor 叶巧明张其春林金辉常嗣和刘菁李智
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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