Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of non-ferrous smelting furnace oxygen lance coating.Product coating thermal expansivity gap of the present invention is little, anti-erosion erosion and good thermal shock stability, can obviously improve oxygen lance oxidizable, invade and damage fast present situation; Thus increased substantially the life-span of oxygen lance, reduce the comprehensive cost of oxygen lance.And there is stronger avidity with steel pipe or iron pipe, reduce the labour intensity of operator, improve the running efficiency of kiln.
In order to solve the problem, the technical solution used in the present invention is:
The invention provides a kind of non-ferrous smelting furnace oxygen lance coating, represent with weight percentage, the raw material of described non-ferrous smelting furnace oxygen lance coating consists of:
The aluminium scrap chrome brick particle 5 ~ 15% of 3 ~ 5mm granularity, the aluminium scrap chrome brick particle 5 ~ 15% of 1 ~ 3mm granularity, the plate diamond spar 5 ~ 15% of 3 ~ 5mm granularity, the plate diamond spar 5 ~ 15% of 1 ~ 3mm granularity, be less than the plate diamond spar 40 ~ 50% of 0.088mm granularity, be less than the chromoxide green 8 ~ 15% of 0.044mm granularity, pure calcium aluminate cement 3 ~ 8% and the α-Al being less than 0.044mm granularity
2o
3micro mist 2.5 ~ 5%; The additional bonding agent accounting for above-mentioned various raw material gross weight 8 ~ 10%.
According to above-mentioned non-ferrous smelting furnace oxygen lance coating, in described aluminium scrap chrome brick, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.
According to above-mentioned non-ferrous smelting furnace oxygen lance coating, described bonding agent is the mixture of aluminium dihydrogen phosphate or Sodium hexametaphosphate 99 or aluminium dihydrogen phosphate and Sodium hexametaphosphate 99.
According to above-mentioned non-ferrous smelting furnace oxygen lance coating, Al in described plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described pure calcium aluminate cement is CA-70 pure calcium aluminate cement; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
The aluminium scrap chrome brick particle that the present invention adopts is that the residual brick of the rear aluminium chromium of non-ferrous smelting furnace is obtained after selection, process, fragmentation, screening.Under the prerequisite ensureing result of use, realize the recycling of resource as much as possible.
positive beneficial effect of the present invention:
1, non-ferrous smelting furnace oxygen lance coating thermal expansivity gap of the present invention is little, anti-erosion erosion and good thermal shock stability, can obviously improve oxygen lance oxidizable, invade and damage fast present situation; Thus increased substantially the life-span of oxygen lance, reduce the comprehensive cost of oxygen lance.And there is stronger avidity with steel pipe or iron pipe, reduce the labour intensity of operator, improve the running efficiency of kiln.
2, the ultra-fine chromoxide green powder that the present invention adopts has very high reactive behavior, contributes to forming aluminium picotite in goods.And there is good fillibility, make goods of the present invention have less void content, increase resistance to slag corrosion.Aluminium chromium matrix then ensure that the slag of nonferrous smelting is in the process to coating internal penetration, the FeO in slag and the Cr in matrix
2o
3, Al
2o
3reaction generates dystectic FeOCr
2o
3and FeOAl
2o
3, inhibit the further infiltration of slag, thus improve the resistance to slag corrosion of material, extend the work-ing life of furnace lining.
3, the present invention can make material have higher normal temperature strength after adopting the abundant maintenance of CA-70 pure calcium aluminate cement to harden, and in use, material sinters, and produces Ceramic bond, ensure that the working strength under hot environment.
4, the present invention adopts α-Al
2o
3micro mist has higher activity, can reduce material sintering reaction temperature in use, expands the temperature use range of material.
5, the present invention adopts the combined binder of aluminium dihydrogen phosphate and Sodium hexametaphosphate 99, not only can significantly improve the intensity of product of the present invention, thus makes it have excellent wear resisting property and cold crushing strength; And there is higher load softening point.In addition, this combined binder can also improve the avidity on product of the present invention and oxygen lance surface, in the process of construction, reduce labor strength.
6, non-ferrous smelting furnace oxygen lance coating of the present invention adopts plate diamond spar and chromoxide green to be main raw material, and adds a certain amount of aluminium scrap chrome brick particle as aggregate, adds pure calcium aluminate cement, α-Al
2o
3micro mist, using aluminium dihydrogen phosphate and Sodium hexametaphosphate 99 as combined binder.Product coating of the present invention and steel pipe or iron pipe have stronger avidity, and thermal expansivity gap is little, anti-erosion erosion and good thermal shock stability; Significantly improve oxygen lance oxidizable, invade and damage fast present situation, increased substantially the life-span of oxygen lance, reduced the comprehensive cost of oxygen lance, improve the running efficiency of kiln.
embodiment:
Set forth the present invention further below in conjunction with embodiment, but do not limit content of the present invention.
Embodiment 1:
Non-ferrous smelting furnace oxygen lance coating of the present invention, represent with weight percentage, its raw material consists of:
The aluminium scrap chrome brick particle of 3 ~ 5mm granularity: 5%,
The aluminium scrap chrome brick particle of 1 ~ 3mm granularity: 5%,
The plate diamond spar of 3 ~ 5mm granularity: 15%,
The plate diamond spar of 1 ~ 3mm granularity: 15%,
Be less than the plate diamond spar of 0.088mm granularity: 40%,
Be less than the chromoxide green of 0.044mm granularity: 10%,
CA-70 pure calcium aluminate cement: 5%,
Be less than the α-Al of 0.044mm granularity
2o
3micro mist: 5%;
The additional combined binder accounting for above-mentioned various raw material gross weight 10%, combined binder is the mixture of aluminium dihydrogen phosphate and Sodium hexametaphosphate 99.
In the aluminium scrap chrome brick that the present embodiment adopts, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.Al in plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
Embodiment 2:
Non-ferrous smelting furnace oxygen lance coating of the present invention, represent with weight percentage, its raw material consists of:
The aluminium scrap chrome brick particle of 3 ~ 5mm granularity: 10%,
The aluminium scrap chrome brick particle of 1 ~ 3mm granularity: 10%,
The plate diamond spar of 3 ~ 5mm granularity: 10%,
The plate diamond spar of 1 ~ 3mm granularity: 10%,
Be less than the plate diamond spar of 0.088mm granularity: 40%,
Be less than the chromoxide green of 0.044mm granularity: 10%,
CA-70 pure calcium aluminate cement: 5%,
Be less than the α-Al of 0.044mm granularity
2o
3micro mist: 5%;
The additional combined binder accounting for above-mentioned various raw material gross weight 10%, combined binder is the mixture of aluminium dihydrogen phosphate and Sodium hexametaphosphate 99.
In the aluminium scrap chrome brick that the present embodiment adopts, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.Al in plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
Embodiment 3:
Non-ferrous smelting furnace oxygen lance coating of the present invention, represent with weight percentage, its raw material consists of:
The aluminium scrap chrome brick particle of 3 ~ 5mm granularity: 10%,
The aluminium scrap chrome brick particle of 1 ~ 3mm granularity: 5%,
The plate diamond spar of 3 ~ 5mm granularity: 5%,
The plate diamond spar of 1 ~ 3mm granularity: 10%,
Be less than the plate diamond spar of 0.088mm granularity: 50%,
Be less than the chromoxide green of 0.044mm granularity: 12.5%,
CA-70 pure calcium aluminate cement: 5%,
Be less than the α-Al of 0.044mm granularity
2o
3micro mist: 2.5%;
The additional biphosphate Al binding agent accounting for above-mentioned various raw material gross weight 8%.
In the aluminium scrap chrome brick that the present embodiment adopts, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.Al in plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
Embodiment 4:
Non-ferrous smelting furnace oxygen lance coating of the present invention, represent with weight percentage, its raw material consists of:
The aluminium scrap chrome brick particle of 3 ~ 5mm granularity: 11%,
The aluminium scrap chrome brick particle of 1 ~ 3mm granularity: 5%,
The plate diamond spar of 3 ~ 5mm granularity: 5%,
The plate diamond spar of 1 ~ 3mm granularity: 8%,
Be less than the plate diamond spar of 0.088mm granularity: 50%,
Be less than the chromoxide green of 0.044mm granularity: 8%,
CA-70 pure calcium aluminate cement: 8%,
Be less than the α-Al of 0.044mm granularity
2o
3micro mist: 5%;
The additional Sodium hexametaphosphate 99 bonding agent accounting for above-mentioned various raw material gross weight 10%.
In the aluminium scrap chrome brick that the present embodiment adopts, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.Al in plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
Embodiment 5:
Non-ferrous smelting furnace oxygen lance coating of the present invention, represent with weight percentage, its raw material consists of:
The aluminium scrap chrome brick particle of 3 ~ 5mm granularity: 15%,
The aluminium scrap chrome brick particle of 1 ~ 3mm granularity: 5%,
The plate diamond spar of 3 ~ 5mm granularity: 5%,
The plate diamond spar of 1 ~ 3mm granularity: 15%,
Be less than the plate diamond spar of 0.088mm granularity: 42%,
Be less than the chromoxide green of 0.044mm granularity: 11%,
CA-70 pure calcium aluminate cement: 3%,
Be less than the α-Al of 0.044mm granularity
2o
3micro mist: 4%;
The additional combined binder accounting for above-mentioned various raw material gross weight 9%, combined binder is the mixture of aluminium dihydrogen phosphate and Sodium hexametaphosphate 99.
In the aluminium scrap chrome brick that the present embodiment adopts, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.Al in plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
Embodiment 6:
Non-ferrous smelting furnace oxygen lance coating of the present invention, represent with weight percentage, its raw material consists of:
The aluminium scrap chrome brick particle of 3 ~ 5mm granularity: 5%,
The aluminium scrap chrome brick particle of 1 ~ 3mm granularity: 15%,
The plate diamond spar of 3 ~ 5mm granularity: 12%,
The plate diamond spar of 1 ~ 3mm granularity: 5%,
Be less than the plate diamond spar of 0.088mm granularity: 41%,
Be less than the chromoxide green of 0.044mm granularity: 15%,
CA-70 pure calcium aluminate cement: 4%,
Be less than the α-Al of 0.044mm granularity
2o
3micro mist: 3%;
The additional combined binder accounting for above-mentioned various raw material gross weight 10%, combined binder is the mixture of aluminium dihydrogen phosphate and Sodium hexametaphosphate 99.
In the aluminium scrap chrome brick that the present embodiment adopts, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.Al in plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
Embodiment 7:
Non-ferrous smelting furnace oxygen lance coating of the present invention, represent with weight percentage, its raw material consists of:
The aluminium scrap chrome brick particle of 3 ~ 5mm granularity: 10%,
The aluminium scrap chrome brick particle of 1 ~ 3mm granularity: 5%,
The plate diamond spar of 3 ~ 5mm granularity: 5%,
The plate diamond spar of 1 ~ 3mm granularity: 10%,
Be less than the plate diamond spar of 0.088mm granularity: 45%,
Be less than the chromoxide green of 0.044mm granularity: 15%,
CA-70 pure calcium aluminate cement: 5%,
Be less than the α-Al of 0.044mm granularity
2o
3micro mist: 5%;
The additional combined binder accounting for above-mentioned various raw material gross weight 10%, combined binder is the mixture of aluminium dihydrogen phosphate and Sodium hexametaphosphate 99.
In the aluminium scrap chrome brick that the present embodiment adopts, the weight percentage of main chemical compositions is Al
2o
3> 78%, Cr
2o
3> 78%; The compressive strength > 70MPa of aluminium scrap chrome brick.Al in plate diamond spar
2o
3weight percentage>=99%; Cr in described chromoxide green
2o
3weight percentage>=98.5%; Described α-Al
2o
3al in micro mist
2o
3weight percentage>=99%.
The performance test of product coating of the present invention:
The embodiment of the present invention 1 ~ 7 product is conventionally carried out formed at normal temp, detects, concrete test result is as shown in table 1.
Through testing and facts have proved, non-ferrous smelting furnace oxygen lance coating tack of the present invention is strong, and anti-erosion erosion and good thermal shock stability, make the oxygen lance life-span significantly improve, reduce the comprehensive cost of oxygen lance and the labour intensity of operator, improve the running efficiency of kiln.