A kind of forsterite-carbon gunning material for non-ferrous smelting furnace

A technology of forsterite and forsterite sand, which is applied in the field of lining gunning materials for non-ferrous smelting furnaces, can solve the problems of loss of kiln service life, spalling of refractory lining structure, and delay in production, so as to prolong service life and improve sintering process , the effect of fluidity improvement

Active Publication Date: 2018-09-18
河南瑞泰耐火材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the non-ferrous heavy metal smelting process, the erosion of iron-silicon slag, the erosion of high-temperature melt and the penetration of metal melt often cause serious structural spalling of the refractory lining, forcing the kiln to stop production for refurbishment, but frequent shutdowns Repairing not only reduces the service life of the kiln and delays production, but also consumes energy

Method used

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  • A kind of forsterite-carbon gunning material for non-ferrous smelting furnace
  • A kind of forsterite-carbon gunning material for non-ferrous smelting furnace
  • A kind of forsterite-carbon gunning material for non-ferrous smelting furnace

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Forsterite-carbon gunning material for non-ferrous smelting furnaces of the present invention, represented by weight percent, consists of 60% of synthetic forsterite sand with a particle size of 0-3mm, and 15% of mid-range magnesia with a particle size of 2-4mm. , composed of 10% fused magnesia with a particle size of <0.088mm, 5% binder and 10% additives;

[0032] The synthetic forsterite sand is prepared by the following method:

[0033] a. First, place magnesite tailings, quartz powder and light-burned magnesium powder in a ball mill to grind them to <0.044mm;

[0034] b. Add 70wt% of tailings powder, 15wt% of quartz powder and 15wt% of light-burned magnesium powder into the three-dimensional mixer, fully mix evenly, and the mixing time is 10 minutes ;

[0035] c. Press the homogeneously mixed powder mixture in step b into a spherical solid billet, the bulk density of the solid billet>2.30g / cm 3 ; The solid billet is dried naturally, and the ball is obtained after...

Embodiment 2

[0044] Forsterite-carbon gunning material for non-ferrous smelting furnaces of the present invention, represented by weight percent, consists of 50% of synthetic forsterite sand with a particle size of 0-3mm, and 20% of mid-range magnesia with a particle size of 2-4mm. , composed of 15% fused magnesia with particle size <0.088mm, 9% binder and 6% additive;

[0045] The synthetic forsterite sand is prepared by the following method:

[0046] a. First, place magnesite tailings, quartz powder and light-burned magnesium powder in a ball mill to grind them to <0.044mm;

[0047] b. Add 75wt% of tailings powder, 17wt% of quartz powder and 8wt% of light-burned magnesium powder into the three-dimensional mixer, and mix well for 15 minutes. ;

[0048] c. Press the homogeneously mixed powder mixture in step b into a spherical solid billet, the bulk density of the solid billet>2.30g / cm 3 ; The solid billet is dried naturally, and the ball is obtained after drying;

[0049] d. Put the b...

Embodiment 3

[0057] Forsterite-carbon gunning material for non-ferrous smelting furnaces of the present invention, represented by weight percent, consists of 40% of synthetic forsterite sand with a particle size of 0-3mm, and 25% of mid-range magnesia with a particle size of 2-4mm. , composed of 20% fused magnesia with a particle size of <0.088mm, 8% binder and 7% additives;

[0058] The synthetic forsterite sand is prepared by the following method:

[0059] a. First, place magnesite tailings, quartz powder and light-burned magnesium powder in a ball mill to grind them to <0.044mm;

[0060] b. Add 62wt% of tailings powder, 25wt% of quartz powder and 13wt% of light-burned magnesium powder into the three-dimensional mixer, mix well and evenly, and the mixing time is 20 minutes ;

[0061] c. Press the homogeneously mixed powder mixture in step b into a spherical solid billet, the bulk density of the solid billet>2.30g / cm 3 ; The solid billet is dried naturally, and the ball is obtained aft...

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Abstract

The invention discloses a forsterite-carbon gunning material for a nonferrous metal smelting furnace. The material is mainly prepared form the raw materials, by weight, of 30%-60% of synthesized forsterite sand with the granularity of 0-3 mm, 10%-30% of middle-grade magnesia with the granularity of 2-4 mm, 10%-30% of fused magnesite with the granularity smaller than 0.088 mm, 5%-15% of binding agent and 6%-20% of additive. Firstly weighed fine powder raw materials, the binding agent and the additive are added to a double spiral mixer for premixing, and a premixing material is obtained; weighed particle raw materials are added to a wheel grinding type sand mixer for stirring and mixing, then the obtained premixing material is mixed again, all compositions of the gunning material are mixed uniformly, and the material is discharged after mixed uniformly for packaging. The gunning material is mainly applied to the nonferrous metal smelting furnace or a reverberatory furnace, has the advantages of excellent erosion resistance, osmosis resistance, flaking resistance and the like and is high in adhesive rate and easy for gunning.

Description

1. Technical field: [0001] The invention relates to a lining gunning material for a nonferrous smelting furnace, in particular to a forsterite-carbon gunning material for a nonferrous smelting furnace. 2. Background technology: [0002] In recent years, with the rapid development of my country's non-ferrous industry, non-ferrous smelters continue to adopt new processes and technologies. At the same time, the large-scale and high-efficiency development of non-ferrous smelting furnaces puts forward new performance requirements for furnace lining refractory materials, so that the furnace lining The use environment of refractory materials is more harsh. In the non-ferrous heavy metal smelting process, the erosion of iron-silicon slag, the erosion of high-temperature melt and the penetration of metal melt often cause serious structural spalling of the refractory lining, forcing the kiln to stop production for refurbishment, but frequent shutdowns Repairing not only reduces the se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/20C04B35/626
CPCC04B35/20C04B35/626C04B35/66
Inventor 徐琳琳刘锡俊任向阳张吉利李顺清叶亚红刘晓磊翟鹏涛胡世平
Owner 河南瑞泰耐火材料科技有限公司
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