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Black slag micro crystal stone and preparation method thereof

A slag and microcrystalline technology, which is applied in the building materials manufacturing process and glass field, can solve the problem of the difficulty of adding a large proportion of blast furnace slag to microcrystalline stone, poor flatness and surface quality of microcrystalline stone, and difficulty in obtaining market recognition and promotion, etc. problems, to achieve the effect of breaking through the bottleneck of manufacturing, good surface quality and high flatness

Active Publication Date: 2015-02-18
CHINA BUILDING MATERIALS ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the inventors found that due to the high calcium content and the presence of iron, sulfur, and carbon elements in blast furnace slag, it is difficult to achieve a large proportion of blast furnace slag in the microcrystalline stone prepared from blast furnace slag, and the prepared microcrystalline The flatness and surface quality of the stone are poor, and the appearance is earthy gray and poor in color, so it is difficult to be recognized and promoted by the market

Method used

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  • Black slag micro crystal stone and preparation method thereof
  • Black slag micro crystal stone and preparation method thereof
  • Black slag micro crystal stone and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] 1. Mix 60 parts of blast furnace slag, 27 parts of quartz sand, 6 parts of soda ash, 2 parts of sodium fluorosilicate, 4 parts of chromite, 0.6 part of titanium dioxide, and 0.4 part of coal powder to obtain a glass batch.

[0067] 2. Slowly send the above-mentioned batch materials into the glass furnace, control the melting temperature to 1500°C, and obtain usable tempered glass after 4-6 hours of melting, 2-3 hours of homogenization and 1-2 hours of clarification melt.

[0068] In this step, the chemical composition of the glass melt is detected, so that the composition of the glass melt is: SiO 2 52.3%, CaO 22.9%, Al 2 o 3 9.39%, MgO 4.16%, Fe 2 o 3 2.15%, Cr 2 o 3 2.5%, Na 2 O is 4.23%, F is 1.43%, TiO 2 0.62%, others: 0.32%. The upper limit of the crystallization temperature of the glass melt is 1065°C, the viscosity of the glass melt is 650Pa·S at a temperature of 1150°C, and 12589Pa·S at a temperature of 950°C.

[0069] 3. The above-mentioned glass melt...

Embodiment 2

[0076] 1. First introduce 78 parts of blast furnace molten slag into the glass melting furnace; then mix 10 parts of quartz sand, 6 parts of soda ash, 2 parts of sodium fluorosilicate, 3 parts of chromite, 0.6 parts of titanium dioxide and 0.4 parts of coal powder Then it is slowly sent into the glass melting furnace.

[0077] 2. Control the melting temperature to 1480°C. After 4-6 hours of melting, 2-3 hours of stirring and homogenization, and 1-2 hours of clarification, a usable tempered glass melt can be obtained.

[0078] In this step, the chemical composition of the glass melt is detected, so that the composition of the glass melt is: SiO 2 41.85%, CaO 29.9%, Al 2 o 3 12.3%, MgO 5.4%, Fe 2 o 3 1.9%, Cr 2 o 3 1.9%, Na 2 O is 4.3%, F is 1.26%, TiO 2 0.74% for others and 0.45% for others. The upper limit of the crystallization temperature of the glass melt is 1050°C, the glass melt viscosity is 500 Pa·S at a temperature of 1150°C, and the glass melt viscosity is 158...

Embodiment 3

[0086]1. Mix 65 parts of blast furnace water-quenched slag, 26 parts of quartz sand, 7 parts of soda ash, 2 parts of sodium fluorosilicate, and 3.4 parts of chromite to obtain a glass batch.

[0087] 2. Slowly send the above-mentioned batch materials into the glass furnace, control the melting temperature to 1500°C, and obtain usable tempered glass after 4-6 hours of melting, 2-3 hours of homogenization and 1-2 hours of clarification melt.

[0088] In this step, the chemical composition of the glass melt is detected, so that the composition of the glass melt is: SiO 2 50.8%, CaO 24.8%, Al 2 o 3 9.8%, MgO is 4.86%, Fe 2 o 3 1.87%, Cr 2 o 3 2.2%, Na 2 O is 4.23%, F is 1.30% Other: 0.14%. The upper limit of the crystallization temperature of the glass melt is 1060°C, the viscosity of the glass melt is 640Pa·S at a temperature of 1150°C, and 12889Pa·S at a temperature of 950°C.

[0089] 3. The above-mentioned glass melt enters the feeding channel through the liquid flow h...

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Abstract

The invention discloses a black slag micro crystal stone and a preparation method thereof, and relates to the field of manufacturing technologies of glass and building materials. The technical problems of low utilization rate of blast-furnace slag, poor color and poor quality in the prior art that the blast-furnace slag is used as a raw material to be prepared into the slag micro crystal stone are solved. The preparation method is mainly characterized by comprising the following steps: the mixture which is formed by 60-80 parts by weight of blast-furnace slag and 19-47 parts by weight of auxiliary materials is melted to obtain a glass melt, wherein the 19-47 parts by weight of auxiliary materials comprise 10-28 parts by weight of a first modificators for providing silicon dioxide, 5-8 parts by weight of a second modificators for providing sodium elements, 4-9 parts by weight of a nucleating agent and 0-1 part by weight of a reducing agent; the glass melt is shaped into a glass plate material by using a float process technology; the glass plate material is nucleated and crystallized to obtain the black slag micro crystal stone. The prepared black slag micro crystal stone has the advantages of high utilization rate of the blast-furnace slag, pure color, high planeness and high surface quality.

Description

technical field [0001] The invention relates to the field of glass and building material manufacturing technology, in particular to a black slag microcrystalline stone and a preparation method thereof. Background technique [0002] Microcrystalline stone, also known as glass-ceramic or glass-ceramic, is a unique new type of inorganic non-metallic material. Microcrystalline stone has many excellent properties, such as high mechanical strength, good chemical stability and thermal stability, wear resistance, corrosion resistance, etc. It is used as structural materials, functional materials, decorative materials, etc. materials are widely used. [0003] Blast furnace slag is a kind of waste slag discharged from the blast furnace when smelting pig iron. It is a silicate material, and its main components include silicon dioxide, calcium oxide, aluminum oxide, magnesium oxide, etc., and the blast furnace slag is Melts are formed at high temperatures. With the development of my ...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03C6/10C03C6/06
CPCC03B18/02C03C10/0063
Inventor 李要辉黄幼榕王晋珍
Owner CHINA BUILDING MATERIALS ACAD
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