阅读说明：本技术 一种锌尾渣处理用特种铬刚玉砖及其制备方法 (A kind of zinc tailings processing extraordinary chrome corundum brick and preparation method thereof ) 是由 袁林 杜巍 李祥 李泉侑 李炜 周海军 王强 赵屹 宋瑞峰 孟凌霄 于 2019-09-04 设计创作，主要内容包括：本发明具体公开了一种锌尾渣处理用特种铬刚玉砖的研制开发,采用由粒度5-3mm的电熔致密刚玉砂、粒度3-1mm的电熔致密刚玉砂、粒度1-0mm的电熔致密刚玉砂、粒度≤0.074mm的电熔致密刚玉砂、粒度3-1mm的板状刚玉砂、粒度1-0mm的板状刚玉砂、粒度≤0.045mm的工业氧化铬绿、外加特种结合剂制成。本发明在铬刚玉中引入钛白粉和添加剂石灰,生成的钛酸钙熔点高达1850℃,具有耐高温、抗侵蚀的性能；添加火山岩粉和蓝晶石粉,大大提高砖的硬度,工业氧化铬绿能够充分和电熔致密刚玉砂及板状刚玉砂混合,达到最佳颗粒级配,有利于提高半成品干燥后的强度,抗压能力强；本锆刚玉砖常温耐压强度为195MPa；在1100℃,水冷试验条件下,抗热震数可以达到25次,耐高温、抗腐蚀程度高。(The invention particularly discloses a kind of zinc tailings processing developments of extraordinary chrome corundum brick, are made of the electric smelting dense alumina sand of electric smelting dense alumina sand, granularity 3-1mm, the electric smelting dense alumina sand of granularity 1-0mm, granularity≤0.074mm electric smelting dense alumina sand, the plate diamond spar sand of granularity 3-1mm, the plate diamond spar sand of granularity 1-0mm, granularity≤0.045mm industrial oxidation chrome green, the additional extraordinary bonding agent by granularity 5-3mm.The present invention introduces titanium dioxide and additive lime in pink fused alumina, and the calcium titanate fusing point of generation is up to 1850 DEG C, has high temperature resistant, erosion-resistant performance；Add volcanic rock powder and aquamaine mountain flour, greatly improve the hardness of brick, industrial oxidation chrome green sufficiently and electric smelting dense alumina sand and the mixing of plate diamond spar sand can reach best particle size gradation, be conducive to improve semi-finished product it is dry after intensity, anti-pressure ability is strong；This zircon corundum brick cold crushing strength is 195MPa；Under 1100 DEG C, water cooling experimental condition, anti-thermal shock number be can achieve 25 times, and high temperature resistant, anticorrosive degree are high.)

1. a kind of extraordinary chrome corundum brick of zinc tailings processing, it is characterised in that: be made of aggregate and the additional bonding agent of powder；Its In, it is made of the raw material of following weight percentage, the sum of aggregate and powder are 100%, aggregate are as follows: electric smelting dense alumina sand 40~ 60%, plate diamond spar sand 10~35%, powder are as follows: electric smelting dense alumina powder 10~20%, industrial oxidation chrome green 10~20%, spy Kind bonding agent 2~4%, volcanic rock powder and aquamaine mountain flour 10%, titanium dioxide or high titanium slag 5%；The electric smelting dense alumina sand Granularmetric composition are as follows: 5~3mm electric smelting dense alumina sand 5~15%, 3~1mm electric smelting dense alumina sand 10~20%, 1~0mm electricity Molten dense alumina sand 20~30% ,≤0.074mm electric smelting dense alumina sand 10~20%, 3~1mm plate diamond spar sand 10~ 20%, 1~0mm plate diamond spar sand 5~15% ,≤0.045mm industrial oxidation chrome green 10~20%.

2. a kind of extraordinary chrome corundum brick of zinc tailings processing as described in claim 1, it is characterised in that: the electric smelting is fine and close just The Al of beautiful sand₂O₃>=99%, the Al of plate diamond spar sand₂O₃>=99%, industrial oxidation chrome green Cr₂O₃>=98%, titanium dioxide or high titanium TiO2 mass percentage content >=90% in slag, volcanic rock powder and aquamaine mountain flour use powdery original stone.

3. a kind of extraordinary chrome corundum brick of zinc tailings processing as described in claim 1, it is characterised in that: the special type bonding agent It is 1.3~1.5g/cm for relative volume density₃Phosphoric acid solution.

4. a kind of preparation method of the extraordinary chrome corundum brick of zinc tailings processing as described in claims 1 to 3 is any, feature exist In: the following steps are included:

A, prepare electric smelting dense alumina sand, plate diamond spar sand, industrial oxidation chrome green by different grain size requirement, it is spare；

B, industrial phosphoric acid solution is prepared into the phosphoric acid solution of concentration needed for processing, it is spare；

C, it takes by weight percentage: electric smelting dense alumina sand 40~60%, plate diamond spar sand 10~35%, electric smelting dense alumina powder 10~20%, industrial oxidation chrome green 10~20%, extraordinary bonding agent 2~4%；The granularmetric composition of the electric smelting dense alumina sand Are as follows: 5~3mm electric smelting dense alumina sand 5~15%, 3~1mm electric smelting dense alumina sand 10~20%, 1~0mm electric smelting are fine and close just Beautiful sand 20~30% ,≤0.074mm electric smelting dense alumina sand 10~20%, 3~1mm plate diamond spar sand 10~20%, 1~0mm Plate diamond spar sand 5~15% ,≤0.045mm industrial oxidation chrome green 10~20%；

D, take by weight percentage: volcanic rock powder and aquamaine mountain flour 10%, titanium dioxide or high titanium slag 5% add bonding agent；

E, the various raw materials prepared are weighed into each raw material according to the ratio, through mixing, molding, drying, entrucking, into hyperthermia tunnel Kiln Firing in 8 hours is kept the temperature under 1550-1650 DEG C of high temperature to get product.

5. a kind of preparation method of cement rotary kiln transition belt novel fire-resistant lining brick as claimed in claim 4, feature exist In in the step b), the relative volume density of the phosphoric acid solution is 1.3~1.5g/cm₃。

6. a kind of preparation method of cement rotary kiln transition belt novel fire-resistant lining brick as claimed in claim 4, feature exist In in the step d), the quality of the bonding agent accounts for the 1%~2% of mixture total mass.

Technical field

The present invention relates to technical field of refractory materials, and in particular to a kind of processing of zinc tailings extraordinary chrome corundum brick and its system Preparation Method.

Background technique

The development of nonferrous smelting science and technology is smelted new technology and is widely used, and the tailings glass of nonferrous smelting is gradually Increase, but the reinforcement with country to environment protection treating dynamics, high requirement is proposed to nonferrous smelting industry tailings glass, this Namely to the service performance of tailings glass refractory material, more stringent requirements are proposed.Traditional nonferrous smelting industry fire proofed wood Expect that some are not suitable for the processing of mine tailings.

And the prior art produces the Main Refractory of extraordinary chrome corundum brick, there is a problem of slag-resistant aggressivity deficiency, When in use, quickly by the speed of external environment erosion；And existing special-quality brick thermal shock resistance is poor, heat-resisting ability is not Foot；The integral hardness of finished product is insufficient, and anti-pressure ability is poor, and service life is limited.

Summary of the invention

For the technical problem for solving nonferrous smelting industry tailings glass refractory material service life, the purpose of the present invention exists In providing a kind of zinc tailings processing extraordinary chrome corundum brick and preparation method thereof.

To achieve the above object, the technical solution adopted by the present invention is as follows:

A kind of extraordinary chrome corundum brick of zinc tailings processing, is made of aggregate and the additional bonding agent of powder；Wherein, by following heavy The raw material of amount percentage is made, and the sum of aggregate and powder are 100%, aggregate are as follows: electric smelting dense alumina sand 40~60%, plate are rigid Beautiful sand 10~35%, powder are as follows: electric smelting dense alumina powder 10~20%, industrial oxidation chrome green 10~20%, extraordinary bonding agent 2 ~4%, volcanic rock powder and aquamaine mountain flour 10%, titanium dioxide or high titanium slag 5%.

As a further solution of the present invention: the granularmetric composition of the electric smelting dense alumina sand are as follows: 5~3mm electric smelting is fine and close Emergy 5~15%, 3~1mm electric smelting dense alumina sand 10~20%, 1~0mm electric smelting dense alumina sand 20~30% ,≤ 0.074mm electric smelting dense alumina sand 10~20%, 3~1mm plate diamond spar sand 10~20%, 1~0mm plate diamond spar sand 5~ 15% ,≤0.045mm industrial oxidation chrome green 10~20%.

As further scheme of the invention: in terms of mass percentage: the electric smelting of three kinds of size specifications is fine and close The Al of emergy₂O₃>=99%, the Al of plate diamond spar sand₂O₃>=99%, industrial oxidation chrome green Cr₂O₃>=98%, titanium dioxide or height TiO2 mass percentage content >=90% in titanium slag, volcanic rock powder and aquamaine mountain flour use powdery original stone.

As further scheme of the invention: it is 1.3~1.5g/cm that the special type bonding agent, which is relative volume density,₃ Phosphoric acid solution.

A kind of extraordinary chrome corundum brick preparation method of zinc tailings processing, comprising the following steps:

A, prepare electric smelting dense alumina sand, plate diamond spar sand, industrial oxidation chrome green by different grain size requirement, it is spare；

B, industrial phosphoric acid solution is prepared into relative volume density is 1.3~1.5g/cm₃Phosphoric acid solution, it is spare；

C, take by weight percentage: electric smelting dense alumina sand 40~60%, plate diamond spar sand 10~35%, electric smelting are fine and close just Beautiful powder 10~20%, industrial oxidation chrome green 10~20%, extraordinary bonding agent 2~4%；The granularity group of the electric smelting dense alumina sand Become: 5~3mm electric smelting dense alumina sand 5~15%, 3~1mm electric smelting dense alumina sand 10~20%, 1~0mm electric smelting are fine and close Emergy 20~30% ,≤0.074mm electric smelting dense alumina sand 10~20%, 3~1mm plate diamond spar sand 10~20%, 1~ 0mm plate diamond spar sand 5~15% ,≤0.045mm industrial oxidation chrome green 10~20%；

D, take by weight percentage: volcanic rock powder and aquamaine mountain flour 10%, titanium dioxide or high titanium slag 5%, add account for it is mixed Close the bonding agent of material gross mass 1%~2%；

E, the various raw materials prepared are weighed into each raw material according to the ratio, through mixing, molding, drying, entrucking, into high temp tunnel Firing in 8 hours is kept the temperature under 1550-1650 DEG C of high temperature of kiln to get product.

Beneficial effect

The present invention introduces other solid phases i.e. titanium dioxide and additive lime in pink fused alumina, and titanium dioxide can promote sintering, Wherein the electric smelting dense alumina sand crystal grain physically well develops, and promotes product densification, and the calcium titanate fusing point of generation is up to 1850 DEG C, Product has high temperature resistant, erosion-resistant performance；Volcanic rock powder and aquamaine mountain flour are added, the hardness of brick, industrial oxidation are greatly improved Chrome green sufficiently and electric smelting dense alumina sand and the mixing of plate diamond spar sand can reach best particle size gradation, be conducive to improve half at Intensity after product are dry, anti-pressure ability are strong；With the zircon corundum brick that this ratio produces, cold crushing strength 195MPa；1100 DEG C, under water cooling experimental condition, anti-thermal shock number be can achieve 25 times, and high temperature resistant, anticorrosive degree are high.

Specific embodiment

The present invention is further explained in the light of specific embodiments, but the scope of protection of the present invention is not limited.

In following embodiment, raw material specification: the Al of the electric smelting dense alumina sand of three kinds of size specifications₂O₃>=99%, plate is rigid The Al of beautiful sand₂O₃>=99%, industrial oxidation chrome green Cr₂O₃>=98%, volcanic rock powder and aquamaine mountain flour use powdery original stone, titanium white TiO2 mass percentage content >=90% in powder or high titanium slag.The industrial phosphoric acid solution relative volume density be 1.3~ 1.5g/cm₃。

Kyanite be formed at intermediate metamorphism pressure it is higher under the conditions of.Kyanite high temperature volumetric expansion, works as temperature When degree reduces, volume change very little is the volume expansion stability for having irreversibility conversion to generate: the fire resisting of kyanite production Stability of material is 1.5 times higher than fireclay refractory；General fireclay refractory refractoriness is 1670~1770 DEG C, and blue Spar refractory material is typically larger than 1790 DEG C, also has preferable resist chemical characteristic.Due to the characteristic of kyanite mineral, therefore For manufacturing excellent high grade refractory,

Float stone (volcanic rock) is that magma is internal due to strongly reducing for pressure after hurried cooling in volcanic eruption Gas escapes rapidly expansion and a kind of glassy lava for having porosity of formation.Its pore volume accounts for the 50% of rock volume More than.Because hole is more, light weight, can bubble through the water column due to referred to as float stone.Float stone is that acid volcanic rock hardness is 6, insulation Well；Chemical activity, strong adsorption have obvious hydraulic gelling property under the effect of hydraulicity exciting agent.