CN115611617B - Process for preparing refractory material for European smelting furnace gasification furnace and refractory material preparation system thereof - Google Patents
Process for preparing refractory material for European smelting furnace gasification furnace and refractory material preparation system thereof Download PDFInfo
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Abstract
The application discloses a refractory material preparation process for an European smelting furnace gasifier and a refractory material preparation system thereof, comprising the preparation of a shaped refractory material and the preparation of a high-strength spray coating, wherein the shaped refractory material is prepared from alpha-Al 2 O 3 The high-strength spray coating is prepared by mixing a proper amount of chromium oxide powder and chromium corundum clinker fine powder according to a proportion, adding a proper amount of water as a mixing agent, molding, and sintering at a high temperature, wherein the mixing agent is changed from water to solvent-gel combination compared with the preparation of a shaping refractory material. According to the application, the refractory material of the key part of the vault of the gasifier is replaced by the chrome corundum material, no special baking process is needed before the gasifier is opened, the sintering can be realized by controlling the temperature rising rate of the vault, and the chrome corundum refractory material adopts a sol combination mode, so that the smelting reduction gasifier can be quickly repaired; the spray coating refractory material can be fast and tightly combined, the material body is stable, the volume density is effectively controlled, and the service life is long.
Description
Technical Field
The application relates to the technical field of refractory materials for a smelting reduction gasifier, in particular to a refractory material preparation process for a gasification furnace of a European smelting furnace and a refractory material preparation system thereof.
Background
At present, the crown of the smelting reduction gasification furnace of the European smelting furnace mostly adopts high-alumina refractory materials, the problem that the crown materials are peeled off and eroded and disappear occurs in the process of coal gasification and production, the potential safety hazard of high-temperature redness of a crown furnace shell is caused, and as the crown adopts a working layer of the high-alumina refractory materials, the adoption of a spraying process leads to lower volume density, high porosity and poor integrity, and the important point is Al in the refractory materials 2 O 3 CL in gas - The problems of loose corrosion and the like of a masonry brick body are caused by reaction, however, maintenance and replacement are one and huge work, and a new construction is needed to be removed by shutting down a furnace in a whole system, namely time and labor are wasted, so that not only is economic loss caused, but also the consumption of refractory materials is increased, and the problems of service life and the like of the conventional refractory materials exist at any time, therefore, the novel refractory material for the crown of the smelting reduction gasification furnace of the European smelting furnace is provided, and a new refractory material is developed by comprising the components, the proportion, the mixing process and the construction methodHigh-quality long-life operation is realized.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a refractory material preparation process for an European smelting furnace gasifier and a refractory material preparation system thereof, which are used for developing and producing chrome-steel-jade-based refractory materials, replacing refractory materials of key parts of an original melting reduction gasifier vault, optimizing refractory material construction and realizing high-quality long-life operation.
In order to achieve the aim, the application relates to a preparation process of refractory material for a gasification furnace of an European smelting furnace and a preparation system of refractory material thereof, which comprises the preparation of a shaped refractory material and the preparation of a high-strength spray coating, wherein the shaped refractory material and the high-strength spray coating are prepared from alpha-Al 2 O 3 The method comprises the steps of taking the chromium oxide powder and the chrome corundum clinker fine powder as main raw materials, and adding a proper amount of the chromium oxide powder and the chrome corundum clinker fine powder according to the proportion; the preparation of the shaped refractory material is completed through a refractory material preparation system, and specifically comprises the following steps:
step one, raw material screening: firstly, crushing raw materials, and screening to obtain the granularity of the raw materials meeting the requirements; wherein, the granularity requirement of the alumina is as follows: 3-5mm accounts for 35%; chromium oxide particle size requirements: fine grinding granularity is more than 0.088mm; zirconia particle size requirements: finely grinding the particles to 190 meshes;
step two, proportioning and weighing: weighing the screened raw materials according to a preset proportion in technical indexes by a proportion weighing system;
step three, mixing and milling: mixing the weighed refractory raw materials according to the proportion, adding a mixing agent, and carrying out forced mixing and grinding by a refractory mixing device, wherein the mixing agent is 3% -5% of water;
step four, checking the component proportions: sampling and testing the mixed and milled refractory material, testing the proportion of components, judging whether the mixed and milled refractory material accords with a preset proportion index, feeding back a test result to a proportion weighing system, and adjusting the weighing amount of each component, wherein the mass fluctuation of the chemical components is +/-1.5% within an index range;
step five, press forming: pressing and forming under 500Mpa pressure by a brick pressing device to obtain a finished brick blank;
step six, forced drying: drying the finished brick blank by adopting a baking process;
step seven, high-temperature firing: firing for 3-5 days at 1600 ℃ to obtain chrome corundum refractory bricks;
compared with the preparation of a shaped refractory material, the preparation of the high-strength spray coating changes the mixture in the step III from water to solvent gel, and simultaneously omits the brick making steps from the step five to the step seven to obtain the chrome corundum series spray coating refractory material.
Further, in the second step, the technical indexes include indexes of high-strength spray paint and indexes of chrome corundum shaped refractory materials, wherein the indexes of chemical component proportions are as follows: 70.29% Al 2 O 3 、20.32%Cr 2 O 3 、0.29%Fe 2 O 3 、4.06%ZrO 2 。
Further, the volume density index control range of the finished brick blank is 3.42+/-0.02 g/cm < 3 >.
Further, wherein the dimension error of the finished green brick is controlled to be less than +/-0.5%.
Further, the apparent porosity index control range is 15.5+/-0.01%.
Further, the high-strength spray coating is prepared by adopting a silica sol binder, wherein the silica sol is a dispersion liquid of nano-scale silicon dioxide particles in water or solvent, and SiO in the silica sol 2 Contains a large amount of water and hydroxyl groups, expressed as SiO 2 .nH 2 O。
Further, in the third step, the mixing and kneading of the refractory kneading device includes the steps of: firstly, adding the weighed raw materials from a charging hole, dropping the raw materials into the center of a rotating primary mixing screening turntable, sequentially carrying out primary mixing and screening from the center of the primary mixing screening turntable to the edge under the action of centrifugal force, finally, rotating and distributing the raw materials into an annular mixing cavity through a distribution hole at the edge of the primary mixing screening turntable, paving the raw materials after primary mixing screening layer by layer according to the size of particles, simultaneously, adding a mixing agent into the annular liquid distribution cavity through a charging pipe, distributing the mixing agent through a liquid distribution pipe at the bottom of the annular liquid distribution cavity, uniformly covering the mixing agent on a newly paved raw material layer, then, shoveling the raw mixture flow on the cavity walls at two sides of the annular mixing cavity through an edge shovel group, turning and pressing the raw mixture flow on the newly paved raw material layer through a planetary shovel, and finally, rolling the new mixture flow through a grinding wheel, repeating the steps on the ground material layer, and further realizing continuous mixing operation.
Further, resistant material mixing device includes the mixing drum, the fixed sealed lid that is provided with of last port of mixing drum, it is provided with to go up sealed lid center the charge door, it is provided with to go up sealed lid edge the filling tube, be in the mixing drum annular mixing chamber, annular mixing chamber rotation is provided with just mix screening carousel and mixing subassembly, just mix screening carousel relatively fixed and set up in the main shaft top, just mix the last port laminating of screening carousel in the inner terminal surface relative rotation setting of last sealed lid of mould, just mix the outer disc laminating of screening carousel in annular mixing chamber outside inner chamber wall relative slip setting, mixing subassembly set up in just mix screening carousel below, and relatively fixed cover is located on the main shaft, the main shaft vertically set up in on the central axis of mixing drum.
Further, a central primary mixing cavity is arranged on the primary mixing screening rotary table corresponding to the position of the charging hole, a plurality of screening cavities are arranged around the periphery of the central primary mixing cavity, the central primary mixing cavity is communicated with the screening cavities through uniform hole grids on the cavity wall, the screening cavities correspond to the material distribution holes through screening grids arranged on the outer cavity wall, screening holes on the screening grids are arranged from front to back from wide to narrow along the rotation direction of the primary mixing screening rotary table, and the outermost ring of the primary mixing screening rotary table is provided with the annular liquid distribution cavity corresponding to the charging pipe.
Further, the mixing assembly comprises a cross beam which is correspondingly fixedly sleeved with the main shaft, the bottom end surface of the cross beam is sequentially arranged from front to back along the rotation direction of the mixing assembly, the side shovel group, the planetary shovel and the grinding wheel are sequentially arranged, the front side of the side shovel group is provided with a liquid distribution pipe, the liquid distribution pipe is communicated with the annular liquid distribution cavity, and the front side of the liquid distribution pipe corresponds to the liquid distribution opening.
The beneficial effects are that: the application discloses a refractory material preparation process for an European smelting furnace gasification furnace and a refractory material preparation system thereof, which develop a new refractory material variety and at least comprise the following advantages:
(1) The refractory material of key parts of the vault of the gasifier is replaced by the chrome corundum material, no special baking process is needed before the gasifier is opened, the sintering can be realized by controlling the temperature rising rate of the vault, and the chrome corundum refractory material adopts a sol combination mode, so that the smelting reduction gasifier can be quickly repaired;
(2) The crown is built by the shaped refractory bricks made of the chrome corundum, and then the non-shaped refractory materials made of the chrome corundum are sprayed and constructed on the crown, so that the construction of the refractory materials is optimized, the sprayed refractory materials can be quickly and tightly combined, the stable material body is realized, the effective volume density control is realized, and the service life is long;
(3) The device is used after the actual construction in the gasification furnace, and has the advantages of good temperature of the vault of the gasification furnace, stable operation, stable heat load, stable structure, reduced overhaul times and overhaul cost of refractory replacement, and realization of high-quality long-service-life operation;
(4) Effectively ensures the development of the refractory long-life technology, lays the development foundation of the European smelting furnace refractory technology, is suitable for the production requirements of similar enterprises, has obvious economic and environmental benefits, and has higher practical value and popularization significance.
Drawings
FIG. 1 is a block diagram of a process for preparing a shaped refractory material;
FIG. 2 is a block diagram of a preparation process of the high-strength spray paint;
FIG. 3 is a table of chemical composition indicators and physical and chemical indicators of the refractory material of the present application;
FIG. 4 is a flow chart of a mixing and kneading process of the refractory mixing device;
FIG. 5 is an external view and a structural explosion view of the kneading apparatus for a refractory;
FIG. 6 is a block diagram of a primary mix screen rotor;
FIG. 7 is a block diagram of a kneading block.
Detailed Description
The application will be further described with reference to the accompanying drawings.
The refractory material preparing process and system for European and metallurgical furnace as shown in fig. 1-7 includes preparing shaped refractory material and preparing high strength paint with alpha-Al 2 O 3 The method comprises the steps of taking the chromium oxide powder and the chrome corundum clinker fine powder as main raw materials, and adding a proper amount of the chromium oxide powder and the chrome corundum clinker fine powder according to the proportion; the preparation of the shaped refractory material is completed through a refractory material preparation system, and specifically comprises the following steps:
step one, raw material screening: firstly, crushing raw materials, and screening to obtain the granularity of the raw materials meeting the requirements; wherein, the granularity requirement of the alumina is as follows: 3-5mm accounts for 35%; chromium oxide particle size requirements: fine grinding granularity is more than 0.088mm; zirconia particle size requirements: finely grinding the particles to 190 meshes;
step two, proportioning and weighing: nominal taking the screened raw materials according to a preset proportion by a proportion weighing system;
step three, mixing and milling: mixing the weighed refractory raw materials according to the proportion, adding a mixing agent, and carrying out forced mixing and grinding by a refractory mixing device, wherein the mixing agent is 3% -5% of water;
step four, checking the component proportions: sampling and testing the mixed and milled refractory material, testing the proportion of components, judging whether the mixed and milled refractory material accords with a preset proportion index, feeding back a test result to a proportion weighing system, and adjusting the weighing amount of each component, wherein the mass fluctuation of the chemical components is +/-1.5% within an index range;
step five, press forming: pressing and forming the refractory material mixture meeting the proportioning index range under 500Mpa pressure by a brick pressing device to obtain a finished brick blank;
step six, forced drying: drying the finished brick blank by adopting a baking process;
step seven, high-temperature firing: firing for 3-5 days at 1600 ℃ to obtain chrome corundum refractory bricks;
compared with the preparation of a shaped refractory material, the preparation of the high-strength spray coating changes the mixture in the step III from water to solvent gel, and simultaneously omits the brick making steps from the step five to the step seven to obtain the chrome corundum series spray coating refractory material.
The preset proportioning index is determined on the basis of a production test, the preset proportioning index comprises a high-strength spray paint index combined with chrome corundum sol and an index of chrome corundum shaping refractory material, and the preset proportioning index comprises chemical component proportioning indexes: 70.29% Al 2 O 3 、20.32%Cr 2 O 3 、0.29%Fe 2 O 3 、4.06%ZrO 2 。
And fifthly, the brick pressing device adopts a die frame floating pressing mode, and realizes the bidirectional pressing effect by precisely controlling the speed matching of a pressing main oil cylinder and a movable die frame oil cylinder in the pressing process, so that the upper and lower densities of products are uniform, the quality of the products is high, and the control range of the volume density index of the finished brick blank is 3.42+/-0.02 g/cm < 3 >.
The brick pressing device adopts a high-performance linear displacement sensor to accurately measure the displacement of the pressing oil cylinder and the movable mold frame, adopts a closed-loop control mode to control the size of the product, and automatically compares and adjusts the size of the finished brick blank so that the size error of the finished brick blank is less than +/-0.5%.
The brick pressing device adopts closed-loop control of pressing force, and through feedback of a pressure sensor, accurate grading speed change pressurization can be realized as required through data processing of a PLC, and multiple times of exhaust molding are performed, so that the porosity of a product is reduced to a large extent, and the density of the product is increased, wherein the control range of the apparent porosity index is 15.5+/-0.01%;
the brick pressing device adopts a volumetric filling device, is matched with a material crusher and a stirring mechanism, and controls the skip through a proportional valve technology, so that the phenomenon of powder agglomeration and segregation is effectively solved, and the uniformity of powder falling into a die cavity is ensured, thereby reaching the requirement range of weight error of a brick control product.
The high-strength spray coating is prepared by adopting a silica sol binder, wherein silica sol is a dispersion liquid of nano-scale silicon dioxide particles in water or solvent, and the silica sol is dissolved in the water or solventSiO in the glue 2 Contains a large amount of water and hydroxyl groups, expressed as SiO 2 .nH 2 O。
In the third step, the mixing and kneading of the refractory kneading device comprises the following steps: firstly, adding the weighed raw materials from a charging hole 1, dropping the raw materials into the center of a rotating primary mixing screening rotary table 2, sequentially carrying out primary mixing and screening on the raw materials from the center of the primary mixing screening rotary table 2 to the edge under the action of centrifugal force, finally, rotating a material distribution hole 3 at the edge of the primary mixing screening rotary table 2 to distribute the raw materials into an annular mixing cavity 4, paving the raw materials after primary mixing screening layer by layer according to the size of particles, simultaneously, adding a mixing agent into an annular liquid distribution cavity 6 through a charging pipe 5, then carrying out mixing agent distribution through a liquid distribution pipe 7 at the bottom of the annular liquid distribution cavity 6, uniformly covering the mixing agent on a newly paved raw material layer, then shoveling the raw mixed materials on the cavity walls at two sides of the annular mixing cavity 4 through an edge shovel group 8, overturning and covering the newly paved raw material layer to form a new mixed material flow, overturning and stirring the new mixed material flow through a planetary shovel 9, and finally, carrying out rolling and repeating the steps on the new mixed material flow through a grinding wheel 10, and carrying out reciprocating rolling and further realizing continuous mixing operation on the rolled material layer.
The refractory mixing device comprises a mixing drum 11, an upper sealing cover 12 is fixedly arranged at an upper port of the mixing drum 11, a charging port 1 is arranged at the center of the upper sealing cover 12, a charging pipe 5 is arranged at the edge of the upper sealing cover 12, an annular mixing cavity 4 is arranged in the mixing drum 11, a primary mixing screening rotary table 2 and a mixing assembly 13 are rotationally arranged in the annular mixing cavity 4, the primary mixing screening rotary table 2 is relatively fixedly arranged at the top end of a main shaft 14, an upper port of the primary mixing screening rotary table 2 is attached to an inner end face of the upper die sealing cover 12 in a relatively rotating manner, an outer circular face of the primary mixing screening rotary table 2 is attached to an inner cavity wall outside the annular mixing cavity 4 in a relatively sliding manner, the mixing assembly 13 is arranged below the primary mixing screening rotary table 2 and is relatively fixedly sleeved on the main shaft 14, the main shaft 14 is vertically arranged on a central axis of the mixing drum 11, and a synchronous rotating relationship between the primary mixing rotary table and the mixing assembly is ensured, and the main shaft is driven to rotate by a power system such as a motor.
A central primary mixing cavity 15 is arranged on the primary mixing screening rotary table 2 corresponding to the position of the charging hole 1, a plurality of screening cavities 16 are circumferentially arranged on the periphery of the central primary mixing cavity 15, the central primary mixing cavity 15 is communicated with the screening cavities 16 through uniform-hole grids 17 on the cavity wall, the screening cavities 16 correspond to the material distributing holes 3 through screening grids 18 arranged on the outer cavity wall, screening holes on the screening grids 18 are arranged from front to back from wide to narrow along the rotation direction of the primary mixing screening rotary table 2, and the outermost ring of the primary mixing screening rotary table 2 is provided with an annular liquid distributing cavity 6 corresponding to the charging pipe 5;
the central primary mixing cavity is positioned at the center of the primary mixing screening turntable, and the cavity bottom is a conical bulge, so that after the raw materials fall into the center of the cavity bottom from above, the raw materials are diffused in a spiral shape to the peripheral side under the dual actions of centrifugal force and gravity, and different raw material particles collide and mix with each other in the process, so that primary mixing of the raw materials is realized;
when the material reaches the outermost side of the primary mixing cavity, the material continuously passes through the uniform mesh grid to enter the screening cavity under the action of centrifugal force, and all the raw materials are allowed to pass through the uniform Kong Geshan holes, so that the material is mainly used for intercepting larger foreign matters, and the problem that the stability of equipment is affected by the fact that the large foreign matters such as iron blocks mixed with the raw materials by mistake enter the mixing drum is avoided, and primary screening of the raw materials is completed;
after the mixed raw materials enter the screening cavity, the mixed raw materials continue to diffuse towards the peripheral side under the action of centrifugal force, and are further mixed in the process, when the raw material flows are close to the screening grids, as the uniform-hole grids are relatively arranged at the rear side of the movement direction of the screening grids, the raw material flows firstly pass through narrow slits and then pass through wide slits, so that the raw material flows after primary mixing are divided into the raw material flows with different particle diameter ranges from front to back after passing through the screening grids, the raw material flows coming out from the wide slits at the forefront side are uniformly paved into the annular mixing cavity in the process of rotating cloth, and then the raw material flows with the particle diameters gradually decreasing are paved layer by layer, so that the raw materials paved at the later layer just can fill the gaps of the raw material at the previous layer, and the uniform distribution of all components in the raw materials is realized, and the uniform distribution of particle thickness is ensured.
The mixing assembly 13 comprises a cross beam 19 fixedly sleeved and installed relative to the main shaft 14, the bottom end surface of the cross beam 19 is sequentially provided with the side shovel set 8, the planetary shovel 9 and the grinding wheel 10 from front to back along the rotation direction of the mixing assembly 13, the front side of the side shovel set 8 is provided with a liquid distribution pipe 7, the liquid distribution pipe 7 is communicated with the annular liquid distribution cavity 6, and the front side of the liquid distribution pipe 7 corresponds to the liquid distribution port 3;
the liquid distribution pipe is relatively arranged at the rear side of the moving direction of the liquid distribution port, the mixture can be added immediately after finishing layer-by-layer distribution, and the mixture is usually liquid and can well permeate into the particle gaps of the raw material layer; when the sol-type bonding agent is selected, large-caliber liquid distribution holes arranged in a single row can be selected, the liquid distribution hole spacing is set according to the state that the sol-type bonding agent drops onto the surface of a new raw material layer to be naturally diffused, and the bonding agent can be uniformly paved on the surface of the material layer;
the side shovel group comprises two splayed material shovels which are oppositely arranged, one sides of the two material shovels, which are close to the front side of the movement direction, are far away from each other and are respectively close to the cavity walls at the two sides of the annular mixing cavity, and one sides of the two material shovels, which are close to the rear side of the movement direction, are close to each other, so that materials, which are close to the cavity walls, can be shoveled up in the process of revolving along a main shaft, are pushed upwards along the shovel surface to be piled up, and are finally turned over and covered on a newly paved raw material layer, so that the materials which are firstly added and mixed for a period of time in the cavity are wrapped with the newly added raw materials, then the newly added raw materials are stirred by a subsequent planetary shovel, and the planetary shovel and the grinding wheel are rolled, so that the planetary shovel and the grinding wheel are prevented from being directly contacted with a mixing agent, especially the sol mixing agent is prevented from being adhered and agglomerated;
as a preferred embodiment, the screening cavity, the material distribution port, the liquid distribution pipe, the side shovel group, the planetary shovel and the grinding wheel are correspondingly arranged in two pairs, and the two pairs are symmetrically arranged on the main shaft.
The foregoing description is only of the preferred embodiments of the application, it being noted that: it will be apparent to those skilled in the art that numerous modifications and adaptations can be made without departing from the principles of the application described above, and such modifications and adaptations are intended to be comprehended within the scope of the application.
Claims (9)
1. A preparation process of refractory materials for an European smelting furnace gasification furnace is characterized in that: comprises the preparation of a shaping refractory material and the preparation of a high-strength spray coating, wherein the shaping refractory material and the high-strength spray coating are prepared from alpha-Al 2 O 3 The method comprises the steps of taking the chromium oxide powder and the chrome corundum clinker fine powder as main raw materials, and adding a proper amount of the chromium oxide powder and the chrome corundum clinker fine powder according to the proportion; the preparation of the shaped refractory material is completed through a refractory material preparation system, and specifically comprises the following steps:
step one, raw material screening: firstly, crushing raw materials, and screening to obtain the granularity of the raw materials meeting the requirements; wherein, the granularity requirement of the alumina is as follows: 3-5mm accounts for 35%; chromium oxide particle size requirements: fine grinding granularity is more than 0.088mm; zirconia particle size requirements: finely grinding the particles to 190 meshes;
step two, proportioning and weighing: the screened raw materials are weighed according to the preset proportion in the technical indexes through a proportion weighing system, and the preset proportion indexes comprise chemical component proportion indexes: 70.29% Al 2 O 3 、20.32%Cr 2 O 3 、0.29%Fe 2 O 3 、4.06%ZrO 2 ；
Step three, mixing and milling: mixing the weighed refractory raw materials according to the proportion, adding a mixing agent, and carrying out forced mixing and grinding by a refractory mixing device, wherein the mixing agent is 3% -5% of water;
wherein, the mixing and mixing of the refractory mixing device comprises the following steps: firstly, adding the weighed raw materials from a charging port (1), enabling the raw materials to fall into the center of a rotating primary mixing screening rotary table (2), sequentially carrying out primary mixing and screening on the raw materials from the center of the primary mixing screening rotary table (2) to the edge under the action of centrifugal force, finally, rotating a material distribution port (3) at the edge of the primary mixing screening rotary table (2) to distribute the raw materials into an annular mixing cavity (4), paving the raw materials after primary mixing screening layer by layer according to the size of particles, simultaneously, adding a mixing agent into the annular liquid distribution cavity (6) through a charging pipe (5), carrying out mixing agent distribution through a liquid distribution pipe (7) at the bottom of the annular liquid distribution cavity (6), enabling the mixing agent to uniformly cover a newly paved raw material layer, then shoveling the raw mixed material flow at the two side cavity walls of the annular mixing cavity (4) through an edge shovel group (8), overturning and covering the newly paved raw material layer to form a new mixed material flow, and carrying out overturning and stirring on the new mixed material flow through a planetary shovel (9), and finally, carrying out repeated rolling and rolling steps on the new mixed material flow to realize the repeated rolling and mixing operation;
step four, checking the component proportions: sampling and testing the mixed and milled refractory material, testing the proportion of components, judging whether the mixed and milled refractory material accords with a preset proportion index, feeding back a test result to a proportion weighing system, and adjusting the weighing amount of each component, wherein the mass fluctuation of the chemical components is +/-1.5% within an index range;
step five, press forming: pressing and forming under 500MPa by a brick pressing device to obtain a finished brick blank;
step six, forced drying: drying the finished brick blank by adopting a baking process;
step seven, high-temperature firing: firing for 3-5 days at 1600 ℃ to obtain chrome corundum refractory bricks;
compared with the preparation of a shaped refractory material, the preparation of the high-strength spray coating changes the mixture in the step III from water to solvent gel, and simultaneously omits the brick making steps from the step five to the step seven to obtain the chrome corundum series spray coating refractory material.
2. The process for preparing refractory materials for a gasification furnace of a smelting furnace according to claim 1, wherein the process comprises the following steps: in the second step, the technical indexes comprise indexes of high-strength spray paint and indexes of chrome corundum shaped refractory materials.
3. A hydrometallurgy according to claim 2The preparation process of the refractory material for the gasifier is characterized by comprising the following steps: wherein, the volume density index control range of the finished product green brick is 3.42+/-0.02 g/cm 3 。
4. A process for preparing refractory materials for a gasification furnace of a smelting furnace according to claim 3, wherein: wherein, the dimension error of the finished green brick is controlled to be less than +/-0.5 percent.
5. The process for preparing refractory materials for a gasification furnace of a smelting furnace according to claim 4, wherein the process comprises the following steps: wherein, the control range of the apparent porosity index is 15.5+/-0.01 percent.
6. The process for preparing refractory materials for a gasification furnace of a smelting furnace according to claim 1, wherein the process comprises the following steps: the high-strength spray coating is prepared by adopting a silica sol binder, wherein the silica sol is a dispersion liquid of nano-scale silicon dioxide particles in water or solvent, and SiO in the silica sol 2 Contains a large amount of water and hydroxyl groups, expressed as SiO 2 .nH 2 O。
7. The refractory preparation system in a refractory preparation process for a gasification furnace of a smelting furnace according to claim 1, wherein: the utility model provides a resistant material mixing device includes compounding bucket (11), the fixed sealed lid (12) that is provided with of port on compounding bucket (11), it is provided with to go up sealed lid (12) center charge door (1), it is provided with to go up sealed lid (12) edge charging tube (5), be in compounding bucket (11) annular mixing chamber (4), annular mixing chamber (4) internal rotation is provided with just mix screening carousel (2) and mixing subassembly (13), just mix screening carousel (2) relatively fixed set up in main shaft (14) top, just mix the laminating of the last port of screening carousel (2) in the inner terminal surface relative rotation setting of last sealed lid (12), just mix the laminating of the outer disc of screening carousel (2) in annular mixing chamber (4) outside inner chamber wall relative sliding sets up, mixing subassembly (13) set up in just mix screening carousel (2) below, just relatively fixed cover is located on main shaft (14), main shaft (14) set up in on the central axis of mixing drum (11).
8. The refractory preparation system in a refractory preparation process for a gasification furnace of a smelting furnace according to claim 7, wherein: the utility model discloses a material mixing and screening rotary table, including material inlet (1) and screening rotary table, mix in advance and screen cloth mouth (3) in advance, be provided with center first chamber (15) corresponding to charge door (1) position on rotary table (2), center first chamber (15) week side is encircleed and is provided with a plurality of screening chambeies (16), center first chamber (15) through even Kong Geshan (17) on the chamber wall with screening chamber (16) intercommunication, screening chamber (16) are through screening grid (18) seted up on the outside chamber wall correspond cloth mouth (3), screening hole on screening grid (18) is followed first mixture screening rotary table (2) direction of rotation is from front to back by wide to narrow range setting, first mixture screening rotary table (2) outermost circle corresponds charging tube (5) are provided with annular cloth liquid chamber (6).
9. The refractory preparation system in a refractory preparation process for a gasification furnace of a smelting furnace according to claim 8, wherein: the milling assembly (13) comprises a cross beam (19) fixedly sleeved and installed relative to the main shaft (14), the bottom end face of the cross beam (19) is sequentially arranged from front to back in the rotation direction of the milling assembly (13), the side shovel group (8), the planetary shovel (9) and the milling wheel (10) are sequentially arranged, the front side of the side shovel group (8) is provided with a liquid distribution pipe (7), the liquid distribution pipe (7) is communicated with the annular liquid distribution cavity (6), and the front side of the liquid distribution pipe (7) corresponds to the liquid distribution port (3).
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