CN116161971A - Continuous ball milling method for ceramic raw materials - Google Patents
Continuous ball milling method for ceramic raw materials Download PDFInfo
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- 239000002994 raw material Substances 0.000 title claims abstract description 226
- 238000000498 ball milling Methods 0.000 title claims abstract description 172
- 238000000034 method Methods 0.000 title claims abstract description 69
- 239000000919 ceramic Substances 0.000 title claims abstract description 45
- 239000002002 slurry Substances 0.000 claims abstract description 199
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000004927 clay Substances 0.000 claims abstract description 57
- 229910052742 iron Inorganic materials 0.000 claims abstract description 53
- 239000010433 feldspar Substances 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 37
- 239000010453 quartz Substances 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 46
- 230000005484 gravity Effects 0.000 claims description 24
- 238000000227 grinding Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000009472 formulation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 21
- 239000002699 waste material Substances 0.000 description 9
- 238000007599 discharging Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/04—Clay; Kaolin
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/19—Alkali metal aluminosilicates, e.g. spodumene
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/62635—Mixing details
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Abstract
The application relates to the technical field of ceramic raw material ball milling processes, and provides a ceramic raw material continuous ball milling method, which comprises the following steps: ball milling is carried out on iron-containing raw materials in feldspar raw materials independently, and iron is removed, so that first slurry is obtained; taking out part or all of clay raw materials and ball milling the clay raw materials together with the first slurry to obtain second slurry; and adding the second slurry in the continuous ball milling process to perform ball milling together to obtain target slurry. Because the clay raw materials have low water content and small particle size and are easy to grind, the clay raw materials and the first slurry are ball-milled together to obtain the second slurry, the ball milling period is short, the situation of overgrinding caused by ball milling of the clay raw materials, the feldspar raw materials with larger particle size and the quartz raw materials is avoided, the energy consumption of the ball mill is reduced, and the feeding space occupied by part or all of the clay raw materials taken out can be used for other formula raw materials, so that the feeding amount of other formula raw materials is increased, the overall feeding amount is further improved, and the overall ball milling productivity is improved.
Description
Technical Field
The application relates to the technical field of ceramic raw material ball milling processes, in particular to a continuous ball milling method for ceramic raw materials.
Background
The continuous ball milling is a continuous processing mode formed by connecting a plurality of ball mills in series, and when the ball milling production and processing of ceramic raw materials are carried out, various raw materials (such as clay raw materials, quartz raw materials, feldspar raw materials and the like) in a formula are put into the continuous ball mill, and the required slurry is obtained through the continuous ball feeding and continuous slurry discharging processes.
In the prior production and processing modes, various raw materials in the formula are fed into a ball mill from a first ball-saving machine, and enter a subsequent ball mill sequentially through ball milling, wherein the slurry fineness is from thick to thin, but the slurry fineness must meet the requirements of the process standard when the materials are fed out; the coarser the ore feeding of the ball mill, the longer the ore grinding time is needed, and when the ceramic raw materials are continuously ball-milled, the larger-grain-size raw materials (such as feldspar raw materials) take longer to grind than the smaller-grain-size raw materials (such as clay raw materials), and when the larger-grain-size raw materials are completely ground, the smaller-grain-size raw materials are overground, so that the waste of the power consumption of the ball mill is caused, and the smaller-grain-size raw materials cannot be discharged when reaching the fineness requirement, so that the material feeding space is occupied, and the overall ball milling yield is limited.
Accordingly, the prior art has drawbacks and needs to be improved and developed.
Disclosure of Invention
The technical problem to be solved in the application is to the above-mentioned defect of prior art, provides a ceramic raw materials continuous ball milling method, aims at solving among the prior art when ceramic raw materials continuous ball milling production, when the big particle diameter raw materials is finely ground completely, can lead to little particle diameter raw materials to grind excessively, causes the waste of ball mill consumption, and little particle diameter raw materials can not discharge when reaching the fineness requirement, and then squeeze into the material space, has restricted the problem of whole ball milling output.
The technical scheme adopted for solving the technical problems is as follows: a continuous ball milling method for ceramic raw materials, comprising:
preparing formula raw materials according to the proportioning requirement, wherein the formula raw materials comprise: clay-based raw materials, feldspar-based raw materials and quartz-based raw materials;
ball milling is carried out on iron-containing raw materials in the feldspar raw materials independently, and iron is removed, so that first slurry is obtained;
taking out part or all of the clay raw materials and ball milling the clay raw materials and the first slurry together to obtain second slurry;
mixing the rest feldspar raw materials, the quartz raw materials and the rest clay raw materials to obtain a mixed material;
and performing continuous ball milling on the mixed material, and adding the second slurry in the continuous ball milling process to perform ball milling together to obtain target slurry.
Optionally, the formulation stock further comprises a recycle material;
the continuous ball milling is carried out on the mixed materials, and the method specifically comprises the following steps:
and mixing the recovered material with the mixed material, and performing continuous ball milling.
Optionally, the ball milling and iron removal are carried out on the iron-containing raw materials in the feldspar raw materials to obtain first slurry, which specifically comprises the following steps:
adding grinding medium and dispergator into a ball mill, adding iron-containing raw materials in the feldspar raw materials for ball milling, and adjusting the water adding amount according to the water content of slurry in the ball mill in the ball milling process to obtain iron-containing slurry;
iron is removed from the first slurry by using an iron remover to obtain first slurry;
wherein the water content of the first slurry is 45-50% by weight, the first slurry is sieved by a 100-mesh sieve, the screen residue is 25-34%, the flow rate is less than or equal to 15 seconds, and the specific gravity is 1.52+/-0.03.
Optionally, the second slurry has a water content of 35-40 wt%, a screen residue of 19-25% and a flow rate of 15-30 seconds, and a specific gravity of 1.63+ -0.03.
Optionally, a continuous ball mill is used in the continuous ball milling process;
the mixed materials are subjected to continuous ball milling, the second slurry is added in the continuous ball milling process to be subjected to ball milling together, and target slurry is obtained, and the method specifically comprises the following steps:
the mixed materials are put into a first section of ball mill for ball milling, and in the ball milling process, the water adding amount is adjusted according to the water content of the slurry in the first section of ball mill, so as to obtain first section of slurry;
the first section of slurry and the second section of slurry are put into a second section of ball mill for ball milling, so as to obtain a second section of slurry;
and (3) throwing the second section of slurry into a subsequent section of ball mill for ball milling, and finally obtaining target slurry.
Optionally, the first slurry has a water content of 31-33 wt%, a 100 mesh sieve, a screen residue of 20-21.5%, a flow rate of 60-80 seconds and a specific gravity of 1.71-1.75.
Optionally, the second section of slurry has the water content of 31-33 wt%, the screen residue of 325 mesh sieve of 19-20%, the flow rate of 60-80 seconds and the specific gravity of 1.71-1.75.
Optionally, the target slurry has a water content of 31-33 wt%, a screen size of 325 meshes, a screen residue of 2.5-3.0%, a flow rate of 60-80 seconds and a specific gravity of 1.71-1.75.
Optionally, the step of throwing the second section of slurry into a subsequent section of ball mill for ball milling to finally obtain target slurry, which specifically comprises the following steps:
the second section of slurry is put into a third section of ball mill for ball milling, so as to obtain a third section of slurry;
and putting the third section of slurry into a fourth section of ball mill for ball milling to obtain target slurry.
Optionally, the third section of slurry has the water content of 31-33 wt%, the screen residue of 9.5-10.5 wt% and the flow rate of 60-80 sec and the specific gravity of 1.71-1.75.
The method comprises the steps of taking out part or all of clay raw materials in the ceramic raw materials, performing ball milling with first slurry obtained by performing ball milling on iron-containing raw materials, wherein the clay raw materials and the first slurry are subjected to ball milling, so that second slurry is obtained, the ball milling period is short, overgrinding caused by ball milling of the clay raw materials and feldspar raw materials and quartz raw materials with larger particle sizes can be avoided, the ball milling energy can be reduced, meanwhile, the addition of the clay raw materials improves the water content of the first slurry, the external water content of the mixed materials can be increased in the continuous ball milling process, the control of the water content and the batch charging continuity of the slurry during normal production can be improved, and the batch charging space occupied by the taken out part or all of the clay raw materials can be used for other formula raw materials, so that the batch charging amount of other formula raw materials is increased, the overall batch charging amount is improved, and the overall ball milling yield is improved.
Drawings
FIG. 1 is a process flow diagram of a ceramic raw material continuous ball milling method provided herein;
FIG. 2 is a schematic flow chart of a ceramic raw material continuous ball milling method provided in the present application;
fig. 3 is a process flow of another embodiment of the ceramic raw material continuous ball milling method provided in the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application clearer and more specific, the present application will be described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The continuous ball milling is a continuous processing mode formed by connecting a plurality of ball mills in series, and when the ball milling production and processing of ceramic raw materials are carried out, various raw materials (such as clay raw materials, quartz raw materials, feldspar raw materials and the like) in a formula are put into the continuous ball mill, and the required slurry is obtained through the continuous ball feeding and continuous slurry discharging processes. In the prior production and processing modes, various raw materials in the formula are fed into a ball mill from a first ball-saving machine, and enter a subsequent ball mill sequentially through ball milling, wherein the slurry fineness is from thick to thin, but the slurry fineness must meet the requirements of the process standard when the materials are fed out; the coarser the ore feeding of the ball mill, the longer the ore grinding time is needed, and when the ceramic raw materials are continuously ball-milled, the larger-grain-size raw materials (such as feldspar raw materials) take longer to grind than the smaller-grain-size raw materials (such as clay raw materials), and when the larger-grain-size raw materials are completely ground, the smaller-grain-size raw materials are overground, so that the waste of the power consumption of the ball mill is caused, and the smaller-grain-size raw materials cannot be discharged when reaching the fineness requirement, so that the material feeding space is occupied, and the overall ball milling yield is limited.
The method is based on the problems that in the prior art, when a large-grain-size raw material is fully ground, the small-grain-size raw material is overground, so that waste of power consumption of a ball mill is caused, and the small-grain-size raw material cannot be discharged when meeting the fineness requirement, and further the batch space is occupied, and the overall ball milling yield is limited; please refer to the following examples for details.
Referring to fig. 1 and 2 in combination, a first embodiment of the present application provides a method for continuously ball milling ceramic raw materials, which includes:
s100, preparing formula raw materials according to the proportioning requirement, wherein the formula raw materials comprise: clay-based raw materials, feldspar-based raw materials and quartz-based raw materials;
specifically, the main raw materials of the ceramic comprise three main mine raw materials such as clay, quartz, feldspar and the like and some chemical raw materials, wherein the clay (kaolin) is a plastic raw material, and plays a role in plasticity and combination in production, the quartz is a barren raw material for reducing blank viscosity, and the feldspar is a flux raw material; aiming at different ceramic products with different proportioning requirements, preparing materials according to the proportioning requirement of a certain ceramic product before continuous ball milling and feeding; the dosage of the clay raw materials, the feldspar raw materials and the quartz raw materials can be adjusted according to specific proportioning requirements;
s200, performing ball milling and iron removal on iron-containing raw materials in the feldspar raw materials independently to obtain first slurry;
because the ore of the feldspar raw material contains more or less iron, namely the ore comprises the raw material with high iron content and the raw material with low iron content, the raw material with high iron content means that the iron content in the ore exceeds a certain value, the blank body is red and dark in the follow-up process, the visual effect is poor, the grade of a ceramic product is influenced, and the value can be determined according to actual production, and the quality of the product is not influenced; the iron-containing raw material in the application refers to a raw material with higher iron content, specifically to a raw material with iron content more than 2.0 weight percent, and iron removal treatment is needed in the processing process; the method comprises the steps of (1) independently taking out raw materials with high iron content (for example, the weight percentage of the iron content is more than 2.0%) in feldspar raw materials, performing ball milling to obtain slurry, and then removing iron from the slurry to obtain first slurry, so that the iron content in the slurry is reduced, the green body is prevented from reddening and darkness, the visual effect is poor, and the grade of a ceramic product is prevented from being influenced;
s300, taking out part or all of the clay raw materials and ball milling the clay raw materials and the first slurry together to obtain second slurry;
specifically, compared with feldspar raw materials and quartz raw materials, the clay raw materials have the characteristics of low water content, small particle size, easiness in grinding and the like, and the ball milling period required by the clay raw materials is short; taking out part or all of clay raw materials according to the requirement to perform ball milling independently, so that the situation of overgrinding caused by ball milling of the clay raw materials and feldspar raw materials with larger particle sizes and quartz raw materials can be avoided, and further the energy consumption can be reduced; the clay raw materials and the first slurry are ball-milled together, so that the water mass percentage of the first slurry can be reduced, the water content of the second slurry is lower, the water addition amount in the continuous ball-milling process is increased, the influence of the second slurry feeding on the water content of the slurry in the continuous ball-milling process is avoided, and the water control and feeding continuity of the slurry in normal production are ensured;
s400, mixing the rest feldspar raw materials, the quartz raw materials and the rest clay raw materials to obtain a mixed material;
in the step, the rest raw materials of the formula are uniformly mixed, so that full ball milling during continuous ball milling is facilitated, and the ball milling efficiency is improved; the residual feldspar raw materials are the residual amount after the iron-containing raw materials are singly taken out from the proportioned feldspar raw materials; the residual clay raw materials refer to the residual amount after taking part of clay raw materials in the preparation process of the second slurry, and if all clay raw materials are taken in the preparation process of the second slurry, the mixture is not provided with the clay raw materials; preferably, the grain diameter of the feldspar raw material and the quartz raw material is less than or equal to 8cm;
s500, performing continuous ball milling on the mixed materials, and adding the second slurry in the continuous ball milling process to perform ball milling together to obtain target slurry.
The continuous ball mill is used in series, wherein a plurality of sections of ball mills are connected in series, a second slurry is added in front of a certain section of ball mill (except for a first section of ball mill) in the plurality of sections of ball mills, the specific adding section is determined according to the fineness of the last section of slurry, and when the fineness of the second slurry is close to the fineness of the last section of slurry, the second slurry is added into the section of ball mill to be ball-milled together with the mixed material.
It will be appreciated that the production process of ceramic products generally includes the steps of batching, ball milling, sieving, drying, compacting, etc.; when the existing ceramic raw materials are subjected to continuous ball milling, all raw materials required by a formula are fed into a ball mill from a first section, and required slurry is obtained from a last section of ball mill through continuous ball feeding and continuous slurry discharging; because the particle size difference of various raw materials in the ceramic raw materials is larger, the ball milling time required by the large-particle-size raw materials (such as feldspar raw materials) is longer than that required by the small-particle-size raw materials (clay raw materials), when the large-particle-size raw materials and the small-particle-size raw materials are mixed for ball milling, when the large-particle-size raw materials are ball milled until the fineness requirement is met, the small-particle-size raw materials are overground, so that the waste of the power consumption of the ball mill is caused, meanwhile, the small-particle-size raw materials continue ball milling after the fineness requirement is just met, the material feeding space is occupied, and the integral ball milling yield is limited; in addition, for sand materials (namely iron-containing raw materials) with higher iron content, ball milling and iron removal are required to be carried out independently, and then the slurry (namely first slurry) after iron removal is added into a first section of ball mill to be ball milled together with other raw materials, so that the water content of the slurry in the first section of ball mill is higher, the addition of other raw materials is influenced, and the effective control of the water content of the slurry in the first section of ball mill is not facilitated;
the continuous ball milling method of ceramic raw materials is used for ball milling ceramic raw materials to prepare slurry, part or all of clay raw materials in the ceramic raw materials are taken out independently, and ball milling is carried out together with first slurry obtained by carrying out independent ball milling on iron-containing raw materials, and the clay raw materials and the first slurry are subjected to ball milling to obtain second slurry, so that the ball milling period is short, the situation of overgrinding caused by ball milling of the clay raw materials, feldspar raw materials with larger particle size and quartz raw materials can be avoided, the ball milling energy can be favorably reduced, the suspension property of the slurry can be favorably increased, meanwhile, the water content of the first slurry is improved, the water content of the mixed materials can be increased in the continuous ball milling process, the control of the water content and the batch continuity of the slurry is favorably ensured in normal production, and the batch space occupied by the taken out part or all of clay raw materials can be used for other formula raw materials, the batch quantity of other formula raw materials is increased, the whole batch quantity is further improved, and the whole batch quantity is favorably improved; in addition, the first section of ball mill avoids the addition of the first slurry, namely reduces the water content of the fed material, is beneficial to increasing the adjustment range of the water content of the fed material, is convenient for controlling the water content of the discharged slurry, avoids the water content of the target slurry from being too high, and is beneficial to reducing the energy consumption during the subsequent material spraying and granulation; according to the existing production condition, when the ball loading amount of the continuous balls is 48 tons/hour, the ball loading amount of the continuous balls can be increased to 56 tons/hour by adopting the steps, and the ball milling productivity is improved by about 15 percent.
In practical application, the amount of the second slurry, the specific formula raw material type and ball penetration amount of the ball milling together with the first slurry, the specific parameters of the second slurry and the like in the continuous ball milling process can be properly adjusted in practical production according to different proportions or later proportion adjustment, in addition, in the practical processing process, the parameters of the second slurry may have fluctuation, and the adding position of the second slurry in the continuous ball milling process can be flexibly changed according to practical production conditions.
In some embodiments, the formulation stock further comprises a recycle; the continuous ball milling is carried out on the mixed materials, and the method specifically comprises the following steps:
and mixing the recovered material with the mixed material, and performing continuous ball milling.
It can be understood that the recovered materials refer to waste powder generated in the production process of ceramic products, polishing slurry generated by edging and polishing the ceramic products, and the like, and the recovered materials and the mixed materials are mixed and then are subjected to continuous ball milling, so that the full ball milling during continuous ball milling is facilitated, the ball milling efficiency is improved, the recycling of waste materials is realized, the resources are saved, and the production cost is reduced; the adding amount of the recovered materials can be determined according to the continuous production process of ceramic products, continuous measurement can be carried out on waste powder and polishing slurry collected every day, the parameters comprise specific components, moisture and the like, so as to obtain a constant, and when the constant is added to different ceramic product proportions, the constant is added to the proportions, so that the formula raw materials comprising clay raw materials, feldspar raw materials, quartz raw materials, iron-containing raw materials and recovered raw materials are obtained, and continuous recovery and utilization of waste materials in normal production are realized.
In some embodiments, the step S200 specifically includes:
s20, adding grinding media and a dispergator into a ball mill, adding the iron-containing raw materials for ball milling, and adjusting the water adding amount according to the water content of slurry in the ball mill in the ball milling process to obtain iron-containing slurry;
specifically, cobblestones can be adopted as grinding media, and the specification is 7-8 cm; the viscosity is reduced when the dispergator acts, the fluidity of the slurry is increased, and the ball milling efficiency is improved; the dispergator can be water glass, and the addition amount of the dispergator accounts for 0.15 percent of the weight of the feeding amount; the ball milling time of the ball mill is 20 minutes, and the rotating speed is 12 revolutions per minute;
s21, deironing the first slurry by using an iron remover to obtain the first slurry; the iron remover generates magnetic field attractive force, and can remove ferromagnetic impurities mixed in the iron-containing slurry, so that the iron content in the iron-containing slurry is reduced; the method specifically reduces the iron content of the iron-containing slurry from about 3.0% to 1.7% -2.0% by weight;
wherein the water content of the first slurry is 45-50% by weight, the first slurry is sieved by a 100-mesh sieve, the screen residue is 25-34%, the flow rate is less than or equal to 15 seconds, and the specific gravity is 1.52+/-0.03. The flow rates of the various slurries in this application were measured using a paint-4 viscometer; specific requirements are given to the moisture, fineness, flow rate and specific gravity of the first slurry according to the fineness of the clay raw materials, so that the subsequent first slurry and the clay raw materials can be subjected to rapid ball milling and meet the fineness requirement.
In some embodiments, the second slurry has a moisture content of 35% to 40% by weight, a 100 mesh screen, a screen residue of 19 to 25%, a flow rate of 15 to 30 seconds, and a specific gravity of 1.63+ -0.03; specific requirements are given to the moisture, fineness, flow rate and specific gravity of the second slurry, so that the ball milling time of the clay raw materials and the first slurry can be effectively shortened, and the ball milling efficiency is improved; controlling the fineness of the second slurry to the standard lower limit, ensuring that the fineness of the second slurry is close to the fineness of the ball-out slurry of the first ball mill, directly adding the second slurry from the second ball mill, thus reducing the actual ball-in amount of the clay raw materials of the first ball mill, further increasing the ball-in amount of the raw materials of other formulas of the first ball mill, and realizing the improvement of ball milling efficiency and productivity; specifically, the ball milling time of the ball mill was 20 minutes, and the rotational speed was 16 rpm.
Referring to fig. 2 and 3 in combination, in some embodiments, a continuous ball mill is used in the continuous ball milling process; the continuous ball mill is formed by connecting a plurality of sections of ball mills in series; the step S500 specifically includes:
s50, putting the mixed material into a first section of ball mill for ball milling, and adjusting the water adding amount according to the water content of the slurry in the first section of ball mill in the ball milling process to obtain first section of slurry;
specifically, the fluidity of the mixed materials can be increased by adding water in the ball milling process, which is beneficial to reducing the loss of the grinding materials in the ball mill; the water adding amount needs to be controlled, the water adding amount is too small, the slurry concentration is too high, abrasive movement is hindered, the grinding capacity is affected, the water adding amount is too large, the energy consumption of subsequent drying is increased, and the production cost is increased; adjusting the water adding amount according to the water content of the slurry in the first section of ball mill so as to ensure the ball milling efficiency of the first section of ball mill on the mixed materials;
s51, throwing the first section of slurry and the second section of slurry into a second section of ball mill for ball milling to obtain a second section of slurry; adding second slurry into a second section of ball mill, and ball milling with the first section of slurry, wherein the fineness of the second slurry is smaller than that of the second section of slurry;
s52, throwing the second section of slurry into a subsequent section of ball mill for ball milling, and finally obtaining target slurry.
It can be understood that according to the fineness of the second slurry, the feeding position of the second slurry in the multi-section ball mill in the continuous ball milling is selected, so that the full utilization of the power consumption of the ball mill is facilitated, the selection of feeding in the second section ball mill is given in the above steps, and the feeding in the third section ball mill or the subsequent section ball mill can be selected, so that the full utilization of the power consumption of the ball mill is facilitated, and the overgrinding phenomenon is avoided; in the continuous ball milling process, the added water amount for ball feeding and the dispergator are proportionally increased, the ball-out fineness is slightly larger, but the fineness of the ball-out slurry of the first section of ball mill can be adjusted to a proper range by adjusting the feeding amount or the rotating speed of the ball mill, and the like, the parameter of the ball-out slurry of the last section of ball mill is tracked, so that the parameter requirement of target slurry is met, and the ball milling productivity can be improved by about 15% within a control standard range.
In some embodiments, the first slurry has a moisture content of 31% to 33% by weight, a 100 mesh screen, a screen residue of 20 to 21.5%, a flow rate of 60 to 80 seconds, and a specific gravity of 1.71 to 1.75. Specific requirements are given to the water content, fineness, flow rate and specific gravity of the first section of slurry obtained by ball milling of the first section of ball mill, and the first section of slurry can be put into the later section of ball mill for ball milling after the requirements are met; the ball milling time of the first ball mill can be 1.5 hours, and the rotating speed is 8 revolutions per minute, so that the first slurry obtained by ball milling meets the parameter requirements of moisture, fineness, flow rate and the like, and the following table is referred to:
in some embodiments, the second slurry has a moisture content of 31% to 33% by weight, a screen size of 325 mesh, a screen residue of 19 to 20%, a flow rate of 60 to 80 seconds, and a specific gravity of 1.71 to 1.75. The specific requirements of the second section of slurry for water content, fineness, flow rate and specific gravity are determined according to the first section of slurry for water content, fineness, flow rate and specific gravity so as to maximally improve ball milling efficiency and improve productivity.
In some embodiments, the target slurry has a moisture weight percent of 31% to 33%, a screen size of 325 mesh, a screen residue of 2.5 to 3.0%, a flow rate of 60 to 80 seconds, and a specific gravity of 1.71 to 1.75. The specific requirements of the water content, fineness, flow rate and specific gravity of the target slurry are determined according to the subsequent production procedures, and the specific requirements of each section of ball mill for discharging slurry can be reversely deduced according to the specific requirements of the target slurry so as to maximally improve the ball milling efficiency and the productivity.
With continued reference to fig. 2 and 3, in some embodiments, the step S52 specifically includes:
s521, throwing the second section of slurry into a third section of ball mill for ball milling to obtain a third section of slurry;
s522, throwing the third section of slurry into a fourth section of ball mill for ball milling, and obtaining target slurry.
It can be understood that the implementation condition that the continuous ball mill has four sections of ball mills is given in the above steps, and finally the target slurry meeting the requirements is obtained; the node number of the continuous ball mill is determined according to the requirements of the water content, fineness and the like of the target slurry in actual production, and the power consumption of the continuous ball mill is fully utilized.
In some embodiments, the third slurry has a moisture content of 31% to 33% by weight, a 325 mesh screen, a screen residue of 9.5 to 10.5%, a flow rate of 60 to 80 seconds, and a specific gravity of 1.71 to 1.75. The specific requirements of the third section of slurry are optimized and adjusted according to the specific requirements of the target slurry and the second section of slurry, so that ball milling efficiency is improved to the maximum extent, and productivity is improved.
In summary, the present application provides a method for continuously ball milling ceramic raw materials, which includes: preparing formula raw materials according to the proportioning requirement, wherein the formula raw materials comprise clay raw materials, feldspar raw materials and quartz raw materials; ball milling is carried out on iron-containing raw materials in feldspar raw materials independently, and iron is removed, so that first slurry is obtained; taking out part or all of clay raw materials and ball milling the clay raw materials with the first slurry to obtain second slurry; mixing the rest feldspar raw materials, quartz raw materials and rest clay raw materials to obtain a mixed material; and (3) carrying out continuous ball milling on the mixed materials, and adding the second slurry in the continuous ball milling process to carry out ball milling together to obtain target slurry. The clay raw materials in the ceramic raw materials are taken out singly and ball-milled together with the first slurry obtained by ball-milling and deironing the iron-containing raw materials, and the clay raw materials and the first slurry are ball-milled together to obtain the second slurry, so that the ball-milling period is short, the situation of overgrinding caused by ball-milling of the clay raw materials, feldspar raw materials and quartz raw materials with larger particle sizes can be avoided, the energy consumption of the ball-mill can be reduced, meanwhile, the addition of the clay raw materials improves the water content of the first slurry, the external water amount can be increased in the continuous ball-milling process of the mixed materials, the control of the water content and the batch continuity of the slurry in normal production can be improved, and the batch space occupied by the clay raw materials with other formulas can be used for increasing the batch quantity of the other formula raw materials, so that the whole batch quantity is improved, and the whole ball-milling capacity is improved.
It is to be understood that the application of the present application is not limited to the examples described above, but that modifications and variations can be made by a person skilled in the art from the above description, all of which modifications and variations are intended to fall within the scope of the claims appended hereto.
Claims (10)
1. A method for continuously ball milling ceramic raw materials, which is characterized by comprising the following steps:
preparing formula raw materials according to the proportioning requirement, wherein the formula raw materials comprise: clay-based raw materials, feldspar-based raw materials and quartz-based raw materials;
ball milling is carried out on iron-containing raw materials in the feldspar raw materials independently, and iron is removed, so that first slurry is obtained;
taking out part or all of the clay raw materials and ball milling the clay raw materials and the first slurry together to obtain second slurry;
mixing the rest feldspar raw materials, the quartz raw materials and the rest clay raw materials to obtain a mixed material;
and performing continuous ball milling on the mixed material, and adding the second slurry in the continuous ball milling process to perform ball milling together to obtain target slurry.
2. The continuous ball milling method of ceramic raw materials according to claim 1, wherein the formulation raw materials further comprise recycled materials;
the continuous ball milling is carried out on the mixed materials, and the method specifically comprises the following steps:
and mixing the recovered material with the mixed material, and performing continuous ball milling.
3. The continuous ball milling method for ceramic raw materials according to claim 1, wherein the step of separately ball milling and removing iron from the iron-containing raw materials in the feldspar raw materials to obtain a first slurry comprises the following steps:
adding grinding medium and dispergator into a ball mill, adding iron-containing raw materials in the feldspar raw materials for ball milling, and adjusting the water adding amount according to the water content of slurry in the ball mill in the ball milling process to obtain iron-containing slurry;
iron is removed from the first slurry by using an iron remover to obtain first slurry;
wherein the water content of the first slurry is 45-50% by weight, the first slurry is sieved by a 100-mesh sieve, the screen residue is 25-34%, the flow rate is less than or equal to 15 seconds, and the specific gravity is 1.52+/-0.03.
4. The continuous ball milling method of ceramic raw materials according to claim 3, wherein the second slurry has a water content of 35-40% by weight, a screen residue of 19-25% by weight, a flow rate of 15-30 seconds and a specific gravity of 1.63+ -0.03 by passing through a 100-mesh screen.
5. The continuous ball milling method for ceramic raw materials according to claim 1, wherein a continuous ball mill is used in the continuous ball milling process;
the mixed materials are subjected to continuous ball milling, the second slurry is added in the continuous ball milling process to be subjected to ball milling together, and target slurry is obtained, and the method specifically comprises the following steps:
the mixed materials are put into a first section of ball mill for ball milling, and in the ball milling process, the water adding amount is adjusted according to the water content of the slurry in the first section of ball mill, so as to obtain first section of slurry;
the first section of slurry and the second section of slurry are put into a second section of ball mill for ball milling, so as to obtain a second section of slurry;
and (3) throwing the second section of slurry into a subsequent section of ball mill for ball milling, and finally obtaining target slurry.
6. The continuous ball milling method of ceramic raw materials according to claim 5, wherein the water content of the first slurry is 31-33% by weight, the slurry passes through a 100-mesh sieve, the screen residue is 20-21.5%, the flow rate is 60-80 seconds, and the specific gravity is 1.71-1.75.
7. The continuous ball milling method of ceramic raw materials according to claim 6, wherein the second slurry has a water content of 31-33% by weight, a screen residue of 325 mesh, a flow rate of 60-80 seconds and a specific gravity of 1.71-1.75, and is sieved with a 325 mesh sieve.
8. The continuous ball milling method of ceramic raw materials according to claim 7, wherein the target slurry has a water content of 31-33% by weight, a screen size of 325 mesh, a screen residue of 2.5-3.0%, a flow rate of 60-80 seconds, and a specific gravity of 1.71-1.75.
9. The method for continuously ball milling ceramic raw materials according to claim 5, wherein the step of ball milling the second slurry in a subsequent ball milling machine to obtain target slurry comprises the following steps:
the second section of slurry is put into a third section of ball mill for ball milling, so as to obtain a third section of slurry;
and putting the third section of slurry into a fourth section of ball mill for ball milling to obtain target slurry.
10. The continuous ball milling method of ceramic raw materials according to claim 9, wherein the third slurry has a water content of 31-33% by weight, a screen residue of 325 mesh of 9.5-10.5%, a flow rate of 60-80 seconds and a specific gravity of 1.71-1.75.
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