CN217450470U - Ceramic blank glaze grinding device - Google Patents

Abstract

The utility model relates to the technical field of ceramic materials, and discloses a ceramic blank glaze grinding device, which comprises a step of grading fine grinding, wherein the step of grading fine grinding is used for grading fine grinding of blank glaze by using a stirring mill; in the process of grading and fine grinding, slurry with fine granularity flows out of the stirring mill and enters the circulating slurry pool, the circulating pump pumps the slurry in the circulating slurry pool into a feeding port of the stirring mill, and the circulation is carried out until the fineness of the slurry is qualified. The utility model discloses a set up stirring mill, circulation thick liquid pond and circulating pump, can be with traditional, the wet process ball-milling technology of blank frit, the innovation is circulation stirring mill technology, has greatly improved the efficiency of milling, has shortened the cycle of milling, realizes raw materials high-quality, low energy consumption, low-cost operation, can satisfy the blank of various fineness, the frit requirement of milling, has realized that low energy consumption, low cost, the efficient new-type of ceramic blank frit glaze are milled.

Description

Ceramic blank glaze grinding device

Technical Field

The utility model relates to a ceramic material technical field especially relates to a ceramic base frit device of milling.

Background

Architectural ceramics and daily ceramics have the advantages of long history, environmental protection and safe use, so the ceramic is widely applied. Ceramic production involves resource and energy consumption, wherein processing of ceramic raw materials is the main power consumption process.

In the prior art, the ceramic raw materials (such as blanks, glaze materials and the like) are processed mainly by a wet ball milling mode, and the commonly used wet ball milling is a batch type or continuous type ball mill, and the tonnage of the ball mill is between 1 and 100 tons. The wet ball milling process has the advantages that: the process is mature and the quality is stable. However, the following problems also exist: 1) the ball mill rotates slowly (10-30 rpm) on the wall of the cylinder to drive the milling ball to climb to mill the material; the material particles are coarse in the initial stage, and the grinding efficiency is good; in the later period, coarse and fine particles and soft and hard materials are mixed together and cannot be classified, and the ball milling efficiency is obviously reduced. 2) The ball milling easily leads the fine particles to be over-milled, thereby generating unnecessary energy consumption; in addition, the particle size distribution of the fine particles of the raw materials after over-grinding is too wide, and the drying shrinkage of a blank body, the glaze shrinkage defect and the like are influenced.

The Chinese patent application with publication number CN1269335A discloses a ceramic glaze grinding and processing technology, which comprises a ball mill grinding technology and comprises the processing steps of: and (3) placing the semi-finished glaze slurry ground by the ball mill into a stirring mill for fine processing to obtain the glaze. Or directly placing the glaze powder into a stirring mill for fine processing to obtain the glaze. The time for finely processing the glaze powder in the stirring mill is determined according to the hardness of the raw materials of the formula, and is generally 0.5-3 hours. Although the patent application of the invention can grind the glaze material to be extremely fine, the average particle size can reach 2 microns; but also has the problem of unnecessary energy consumption caused by over-grinding of fine particles; moreover, for some ceramic raw materials which have not such high requirement on the particle fineness, the grinding mode is difficult to ensure the uniformity of the particles.

In view of the above, the ceramic raw material grinding process which is lower in energy consumption, higher in efficiency and better in particle uniformity is provided, the production cost and the product defects are reduced, and the ceramic raw material grinding process is an important subject of ceramic production and has great practical significance.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a ceramic base glaze device of milling that low energy consumption, low cost, high efficiency and particle size homogeneity are good.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

A ceramic blank glaze grinding device, comprising: the stirring mill and the circulating slurry pool are arranged, a circulating pipeline is arranged between the stirring mill and the circulating slurry pool, and a circulating pump for pumping slurry from the circulating slurry pool to the stirring mill is arranged on the circulating pipeline; and a stirring device is arranged in the circulating slurry tank.

More preferably, the stirring mill is a vertical stirring mill or a horizontal sand mill.

More preferably, the diameter of the grinding ball of the stirring mill is 5-20 mm.

More preferably, the grinding ball of the stirring mill is at least one of high alumina ceramic ball, alumina ball, metal ball and zirconia ball.

The ceramic blank glaze grinding device further comprises ball milling equipment, wherein the ball milling equipment is positioned on the upstream process of the stirring mill and used for realizing primary ball milling, a transition slurry pool is arranged at the discharge end of the ball milling equipment, a suction pipeline is arranged between the transition slurry pool and the circulating slurry pool, and a suction pump for sucking slurry from the transition slurry pool to the circulating slurry pool is arranged on the suction pipeline.

The ceramic blank glaze grinding device also comprises coarse crushing equipment, wherein the coarse crushing equipment is positioned on an upstream process of the ball milling equipment; the coarse crushing equipment is used for coarsely crushing the blocky hard stones into small stone granules and then feeding the small stone granules into the ball milling equipment.

The ceramic blank glaze grinding device also comprises a dewatering device, wherein the dewatering device is positioned on the downstream process of the stirring mill.

More preferably, the dewatering device is one of a spray drying tower or a filter press.

The beneficial effects of the utility model are that: through setting up stirring mill, circulation thick liquid pond and circulating pump, can be with traditional, the wet process ball-milling technology of base frit, innovate for circulation stirring mill technology or ball-milling and circulation stirring mill technology, greatly improved the efficiency of milling, shortened the cycle of milling, realize that the raw materials is high-quality, low energy consumption, low cost operation, can satisfy the blank of various finenesses, the frit requirement of milling, realized that the low energy consumption of ceramic base frit, low cost, efficient new-type are milled.

Drawings

Fig. 1 is a schematic structural view of a ceramic glaze processing device provided in embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a ceramic blank processing apparatus according to embodiment 2 of the present invention.

Reference numerals indicate the same.

1: ball mill, 2: transition pulp tank, 3: sand mill, 4: circulating slurry tank, 5: suction duct, 6: suction pump, 7: circulation line, 8: circulating pump, 9: first stirring device, 10: second stirring device 11: and (4) a mortar outlet pipeline of the sand mill.

1-1: a feed inlet, 1-2: a discharge tube.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified and limited, "a first feature" on "or" under "a second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following description will be further made in conjunction with the accompanying drawings of the specification, so that the technical solution and the advantages of the present invention are clearer and clearer. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Example 1.

As shown in fig. 1, a ceramic compact glaze grinding device comprises: the slurry in the ball mill 1 is discharged into the transition slurry pool 2, and the slurry flowing out of the sand mill 3 enters the circulating slurry pool 4; a suction pipeline 5 is arranged between the transition pulp tank 3 and the circulating pulp tank 4, and a suction pump 6 for sucking slurry from the transition pulp tank 3 to the circulating pulp tank 4 is arranged on the suction pipeline 5; a circulating pipeline 7 is arranged between the sand mill 3 and the circulating slurry tank 4, and a circulating pump 8 for pumping slurry from the circulating slurry tank 4 to the sand mill 3 is arranged on the circulating pipeline 7; a first stirring device 9 and a second stirring device 10 are respectively arranged in the transition pulp tank 2 and the circulating pulp tank 4.

In operation, the ball mill 1 is used to achieve primary ball milling, and the sand mill 3 is used to achieve graded finish milling. After the primary ball milling is finished, the particle distribution of the slurry is mainly concentrated between 80 and 180 meshes and accounts for 40 to 70 percent. And performing circular grading and fine grinding on the slurry subjected to primary ball milling by using a sand mill to obtain the slurry with qualified grinding fineness. The particle distribution of the sizing and refined slurry is concentrated between 250 meshes and 400 meshes. The method can be realized by controlling the screen residue of the screen, and the fineness of the slurry is qualified when the 325-mesh screen residue of the slurry is 0.3-2.5%.

In this embodiment, the ball mill 1 is preferably a batch ball mill having a loading tonnage of 20 tons and a milling ball diameter of 5 cm. In other embodiments, the tonnage of the batch ball mill can be properly selected between 3 and 60 tons, and the diameter of the milling ball body is properly selected between 5 and 8 cm; in other embodiments, the ball mill 1 may be a continuous ball mill; the present embodiment is not limited.

In this embodiment, it is preferable that the rotation speed of the stirring shaft of the sand mill 3 is 500rpm, and the ball diameter of the grinding ball of the sand mill 3 is 8 mm. The grinding ball of the sand mill is made of high-alumina ceramic balls. In other embodiments, the rotation speed of the stirring shaft of the sand mill 3 is properly selected between 200 and 800rpm, the ball diameter of the grinding ball of the sand mill 3 is properly selected between 5 and 20mm, and the material of the grinding ball of the sand mill can be at least one of alumina balls, metal balls and zirconia balls; in other embodiments, the sand mill 3 may be replaced by other stirring mill equipment for graded grinding, such as a vertical stirring mill; the present embodiment is not limited.

The ceramic blank glaze grinding device provided by the embodiment has the following specific working process: the raw materials for the blank and the glaze are mixed and added from a charging opening 1-1 of a ball mill 1, after primary grinding is qualified (80-160 meshes) through the ball mill 1, slurry is discharged into a transition slurry tank 3 through a discharge pipe 1-2, and the primary ground slurry is pumped into a circulating slurry tank 4 through a suction pump 6. And pumping the slurry in the circulating slurry tank 4 into the sand mill 3 by using the circulating pump 8 for grinding, discharging the slurry with fine granularity out of the sand mill 3 through a slurry outlet pipeline 11 of the sand mill, and entering the circulating slurry tank 4, and circularly operating in the way until the fineness of the slurry is qualified (0.3-2.5 percent of the slurry left after a 325-mesh sieve).

Compared with the prior art, the utility model discloses a main innovation lies in: 1) the wall of the ceramic blank glaze ball mill has slow rotating speed, especially a large-tonnage blank ball mill, the rotating speed is usually 10-20rpm, the ball diameter of the milling ball reaches 6-10cm, and the specific surface area is small. In the initial stage of milling, the impact effect of the large balls on coarse materials is strong, and the efficiency is high; when the particles are finer, the milling efficiency of the ball mill is significantly reduced. The utility model discloses regard as elementary equipment of milling with the ball mill, unload the transition thick liquid pond after reaching the requirement and treat the correct grinding, also make things convenient for the night peak shifting power consumption of correct grinding process, reach reduce cost's effect.

2) Stirring mill, taking horizontal sand mill as example: the rotating speed of a stirring shaft in the mill is high and reaches hundreds of revolutions; the grinding balls have small diameter, usually 5-20mm, and large specific surface area, and are suitable for grinding materials with small feed particle size. Under the action of high-speed centrifugal force, the materials and the grinding balls are automatically classified, coarse-particle materials adhere to the wall, and fine-particle materials are arranged near the stirring shaft; the grinding balls are pressed towards the cylinder wall under the action of centrifugal force; and under the action of the stirring disc and the stirring rod, displacement and shearing are generated between the grinding balls, so that efficient grading circulating fine grinding is realized. The utility model discloses a set up circulation thick liquid pond on the sand mill next door and realize the circulation operation of milling, can be fast, control the particle fineness effectively, avoid the transition to mill, practice thrift the energy consumption, practice thrift the cost, provide efficiency.

3) Because the sand mill has high energy density and high yield, one or two sand mills can be matched with a plurality of ball mills in series, such as 2-10 sand mills. The method is specifically determined according to the grain size of fed and discharged materials, the tonnage of equipment, the material characteristics and the like.

Example 2.

As shown in fig. 2, a ceramic biscuit glaze milling apparatus substantially identical to that of example 1 except that the ball mill, transition slurry tank, suction pipe and suction pump of example 1 are omitted.

When the glaze mill works, the glaze with certain fineness is directly mixed with the raw materials and added into the circulating slurry tank 4 to be stirred, and the glaze slurry is added into the sand mill 3 with the volume of 1000 liters through the circulating pump 8 to be milled. And (3) allowing the slurry with fine particle size to flow out of the sand mill 3 and enter a circulating slurry tank 4, and circulating the operation until the fineness of the slurry is qualified (0.3-2.5 percent of the slurry left by a 325-mesh sieve).

In some embodiments, a coarse crushing device is further disposed upstream of the ball mill, and after the massive hard stones are crushed into small stone particles by the coarse crushing device (e.g., jaw crushing), the small stone particles are mixed with soft materials such as clay in proportion and then added into the ball mill for wet milling.

The coarse crushing equipment can be a jaw crusher; depending on the specific situation in the different production areas, the coarse crushing of the hard lump stones can also be done before the raw material enters the ceramic factory. The particle distribution of the coarse crushed hard stone is mainly concentrated between 3 and 20 mm. It is obvious that other types of coarse crushing equipment known now or to be realized in the future may be selected by the person skilled in the art according to the actual need.

In other embodiments, a dewatering device is further provided downstream of the sand mill, and the dewatering device is one of a spray drying tower and a filter press.

It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the known art are intended to fall within the scope of the invention, which is defined by the claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims (8)

1. A ceramic blank glaze grinding device is characterized by comprising: the slurry stirring device comprises a stirring mill and a circulating slurry tank, wherein a circulating pipeline is arranged between the stirring mill and the circulating slurry tank, and a circulating pump for pumping slurry from the circulating slurry tank to the stirring mill is arranged on the circulating pipeline; and a stirring device is arranged in the circulating slurry tank.

2. The ceramic blank glaze grinding device as claimed in claim 1, wherein the stirring mill is a vertical stirring mill or a horizontal sand mill.

3. The ceramic blank glaze grinding device as claimed in claim 1, wherein said stirring mill has a ball diameter of 5-20 mm.

4. The ceramic blank glaze grinding device as claimed in claim 1, wherein the grinding balls of the stirring mill are at least one of high alumina ceramic balls, alumina balls, metal balls and zirconia balls.

5. The ceramic blank glaze grinding device according to claim 1, further comprising a ball milling device, wherein the ball milling device is located in the upstream process of the stirring mill, a transition slurry tank is arranged at the discharge end of the ball milling device, a suction pipeline is arranged between the transition slurry tank and the circulating slurry tank, and a suction pump for sucking slurry from the transition slurry tank to the circulating slurry tank is arranged on the suction pipeline.

6. The ceramic blank glaze grinding device according to claim 5, further comprising a coarse crushing device, wherein the coarse crushing device is positioned on an upstream process of the ball milling device; the coarse crushing device is used for coarsely crushing blocky hard stones into small stone granules and then sending the small stone granules into the ball milling device.

7. The ceramic blank glaze grinding device as set forth in claim 1, further comprising a dewatering device, said dewatering device being located downstream of said agitator mill.

8. The ceramic blank glaze grinding device as claimed in claim 7, wherein said dewatering device is one of a spray drying tower and a filter press.

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