Unlock instant, AI-driven research and patent intelligence for your innovation.

Refractory castable for side protecting plate of converter as well as production method and application of refractory castable

A technology of castables and side guards, which is applied in the field of refractory materials, can solve problems such as personal injury, safety hazards, and easy to be corroded by high temperature, and achieve the effects of prolonging service life, improving construction performance, and easy control

Inactive Publication Date: 2014-08-13
武钢集团有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The use of converter steelmaking technology greatly improves production efficiency, but it also brings safety hazards
Since the converter contains molten steel at about 1650°C, molten steel or slag splashes during the injection process, and the iron plate protection used in the traditional process is easily corroded by high temperature
prone to personal injury

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A castable for converter side guard plates, which consists of the following components by weight: 50 kg of high alumina bauxite clinker, 25 kg of high alumina light clinker, 18 kg of bauxite cement, 5 kg of Guangxi white clay, and 1.0 kg of sodium tripolyphosphate , steel fiber 0.8 kg, organic fiber 0.2kg.

[0021] Al in the selected high alumina bauxite clinker 2 o 3 The weight percentage content is ≥79%, and the particle size of high alumina bauxite clinker particles is ≤5mm, of which, 3mm2 o 3 The weight percentage content of ≥ 55%, the particle size of high-alumina light clinker is ≤ 5mm; Al in the selected bauxite cement 2 o 3 The weight percentage content of ≥ 50%, particle size ≤ 0.088mm; Al in the selected Guangxi white clay 2 o 3 The weight percentage content is ≥28%, the particle size is ≤0.088mm; the particle size of the selected organic fiber is 3~4mm, and the particle size of sodium tripolyphosphate is ≤0.088mm. The selected citric acid monohydrate pa...

Embodiment 2

[0023] A casting material for the side guard plate of a converter, which consists of the following components by weight: 75kg of high-alumina bauxite clinker, 10kg of high-alumina light clinker, 12kg of bauxite cement, 4kg of Guangxi white clay, and 1.0kg of sodium hexametaphosphate , steel fiber 0.8 kg, organic fiber 0.1 kg; citric acid monohydrate 0.1 kg.

[0024] Al in the selected high alumina bauxite clinker 2 o 3 The weight percentage content is ≥79%, and the particle size of high alumina bauxite clinker particles is ≤5mm, of which 32% is 3mm2 o 3 The weight percentage content of ≥ 55%, the particle size of high-alumina light clinker is ≤ 5mm; Al in the selected bauxite cement 2 o 3 The weight percentage content of ≥ 50%, particle size ≤ 0.088mm; Al in the selected Guangxi white clay 2 o 3 The weight percentage content is ≥28%, and the particle size is ≤0.088mm; the particle size of the selected organic fiber is 3~4mm, and the particle size of sodium hexametaphospha...

Embodiment 3

[0026] A casting material for the side guard plate of a converter, which consists of the following components by weight: 61kg of high-alumina bauxite clinker, 18kg of high-alumina light clinker, 13kg of bauxite cement, 6kg of Guangxi white clay, and 1.0kg of sodium hexametaphosphate , sodium tripolyphosphate 1.0kg, steel fiber 0.8 kg, organic fiber 0.1kg; citric acid monohydrate 0.1kg.

[0027] Al in the selected high alumina bauxite clinker 2 o 3 The weight percentage is ≥79%, and the particle size of high alumina bauxite clinker particles is ≤5mm, among which, 3mm2 o 3The weight percentage content of ≥55%, the particle size of high-alumina light clinker is ≤5mm; Al in the selected high-alumina bauxite clinker powder 2 o 3 The weight percentage content is ≥85%, the particle size is ≤0.088mm, and the Al in the selected bauxite cement 2 o 3 The weight percentage content of ≥ 50%, particle size ≤ 0.088mm; Al in the selected Guangxi white clay 2 o 3 The weight percentage c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a refractory castable for a side protecting plate of a converter as well as a production method and an application of the refractory castable. The refractory castable for the side protecting plate of the converter comprises the following components by weight: 50-75 parts of high-bauxite clinker, 10-25 parts of high-aluminum light clinker, 12-18 parts of alumina cement, 4-6 parts of Guangxi white mud and 2-3 parts of a composite additive, wherein the composite additive comprises an organic fiber, a steel fiber and one or multiple of citric acid monohydrate, sodium tripolyphosphate or sodium hexametaphosphate. The refractory castable is poured on a steel shell with an anchoring part and can be used for increasing the safety protection coefficient of the side protecting plate of the converter, prolonging the service life of the side protecting plate of the converter and reducing the danger coefficient and the production cost; and a production method of the refractory castable for the side protecting plate of the converter is simple and easy to operate.

Description

technical field [0001] The invention belongs to refractory materials used in the field of iron and steel smelting, and specifically refers to a castable for converter side guard plates, a production method and application thereof. Background technique [0002] Converter steelmaking is carried out in the converter, the appearance of the converter is a pear, the inner wall has refractory bricks, and there are many small holes (tuyeres) on the side of the furnace. Compressed air is blown into the furnace through these small holes, also known as side-blown converter. At the beginning, the converter is horizontal, inject liquid pig iron at 1300°C, and add a certain amount of quicklime, then blow in air and turn the converter to make it stand upright. At this time, the surface of the liquid pig iron reacts violently to oxidize iron, silicon and manganese. (FeO, SiO2, MnO) generate slag, and use the convective action of molten steel and slag to make the reaction spread throughout t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 郑吉红高永生田先明蔡仲方黄建坤杨雯
Owner 武钢集团有限公司