阅读说明：本技术 一种高纯度纳米硅酸锆的制造工艺 (Manufacturing process of high-purity nano zirconium silicate ) 是由 刘溧 李万景 黄骏 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种高纯度纳米硅酸锆的制造工艺,属于硅酸锆制造技术领域,一种高纯度纳米硅酸锆的制造工艺,包括,通过对锆英砂原料进行一级研磨、二级研磨、三级研磨并逐级经过过筛机构进行过筛处理,提高原料的研磨细度,且不会造成未筛选出的粉末颗粒阻塞留存在过筛机构上,易于技术人员操作,同时在对原料研磨的过程中喷射适度的固态分散剂,锆英砂原料在被研磨时混入固态分散剂,固态分散效果好,有效避免造成颗粒团聚,得到颗粒细度达到小于1.0um的锆英粉末后再经过酸洗渗析、离心水洗去除原料中的大部分铁杂质,最后对烘干的粉末利用除铁器去除纳米硅酸锆粉末中的残留铁,即得到高纯度纳米硅酸锆。(The invention discloses a process for preparing high-purity nano zirconium silicate, which belongs to the technical field of zirconium silicate preparation, and comprises the steps of carrying out primary grinding, secondary grinding and tertiary grinding on a zircon sand raw material, and carrying out screening treatment step by step through a screening mechanism, so that the grinding fineness of the raw material is improved, non-screened powder particles are not blocked and retained on the screening mechanism, the operation of technical personnel is easy, meanwhile, a moderate solid dispersing agent is sprayed in the grinding process of the raw material, the zircon sand raw material is mixed with the solid dispersing agent when being ground, the solid dispersing effect is good, the particle agglomeration is effectively avoided, the zircon powder with the particle fineness of less than 1.0um is obtained, most iron impurities in the raw material are removed through acid cleaning dialysis and centrifugal water washing, and finally, the dried powder is subjected to iron remover to remove residual iron in the nano zirconium silicate powder, thus obtaining the high-purity nano zirconium silicate.)

1. A manufacturing process of high-purity nano zirconium silicate is characterized by comprising the following steps: the specific manufacturing process is as follows:

s1, selecting 3-6g/cc natural zircon sand as a raw material, and screening and selecting 4-5g/cc natural zircon sand for later use;

s2, placing the zircon sand selected in the S1 into a pulverizer (1) for primary grinding, secondary grinding and tertiary grinding, screening by a screening mechanism (4) step by step, and adding a solid dispersing agent in the zircon sand grinding process to obtain zircon powder with the particle fineness of less than 1.0 um;

s3, placing the slurry obtained by pulping the zircon powder into a pickling tank (9), removing iron impurities in the zircon slurry by hydrochloric acid, and washing and centrifuging by a centrifuge to obtain slurry precipitate;

s4, drying the slurry precipitate to obtain nano zirconium silicate powder, and removing residual iron in the nano zirconium silicate powder by using an iron remover to obtain the high-purity nano zirconium silicate.

2. The manufacturing process of high-purity nano zirconium silicate according to claim 1, characterized in that: the external fixation of milling machine (1) inlays and is equipped with shell (2) in S2, the top portion of milling machine (1) is equipped with feeder hopper (101), the bottom portion of milling machine (1) sets up out hopper (102), the inside rotation meshing of milling machine (1) is connected with grinding roller set (3), the upper end fixed mounting of shell (2) inlays and locates milling machine (1) upper end inboard dispersant diffusion mechanism.

3. The manufacturing process of high-purity nano zirconium silicate according to claim 2, characterized in that: dispersant diffusion mechanism is including inlaying dispersant diffusion case (6) of establishing and installing on milling machine (1) lateral wall, the bottom portion of dispersant diffusion case (6) extends to milling machine (1) inside, a plurality of diffusion holes have been seted up on the bottom lateral wall of dispersant diffusion case (6), fixed mounting has air-blower (7) on the upper end lateral wall of shell (2), air-blower (7) are connected with the inner wall of dispersant diffusion case (6) through the blast pipe.

4. The manufacturing process of high-purity nano zirconium silicate according to claim 3, characterized in that: sieve mechanism (4) and be located out hopper (102) below, the upper end both sides of shell (2) are all installed and are carried out traction drive's traction vibration mechanism (5) to sieving mechanism (4), sieve mechanism (4) including being located sieve (401) of crossing of hopper (102) below, the middle part position department of crossing sieve (401) inlays and establishes and installs screen cloth (402), cross both ends fixedly connected with baffle (403) around sieve (401), fixed mounting has otic placode pivot (404) of being connected with shell (2) inner wall rotation on baffle (403), and the equal fixedly connected with otic placode (405) in the left and right sides upper end of two baffle (403).

5. The manufacturing process of high-purity nano zirconium silicate according to claim 4, characterized in that: traction vibration mechanism (5) include through carry over pinch rolls (501) of support frame fixed mounting on shell (2) upper end lateral wall, set up on the lateral wall of carry over pinch rolls (501) two with a pair of otic placode (405) position correspond around establishing the groove, around establishing the inslot around establishing and being connected with haulage rope (502), the bottom of haulage rope (502) runs through shell (2) and fixed connection on otic placode (405), fixed mounting has the motor that carries out the drive to carry over pinch rolls (501) on the support frame.

6. The manufacturing process of high-purity nano zirconium silicate according to claim 4, characterized in that: the powder that corresponds with crossing screen cloth (402) position is placed to the bottom of shell (2) loads the case, run through on the both sides lateral wall of shell (2) and inlay and be equipped with deflector (8), the both sides outer end of shell (2) has all been placed and has been met the workbin with deflector (8) position assorted circulation.

7. The manufacturing process of high-purity nano zirconium silicate according to claim 1, characterized in that: fixed mounting has anion homogeneous phase membrane (10) in pickling case (9) among S3, anion homogeneous phase membrane (10) become dialysis chamber and diffusion chamber with pickling case (9) internal partitioning, install rabbling mechanism in the dialysis chamber.

8. The manufacturing process of high-purity nano zirconium silicate according to claim 7, characterized in that: the outer side walls of the dialysis chamber and the diffusion chamber are respectively provided with a slurry inlet pipe and a liquid receiving inlet pipe, the outer side wall of the diffusion chamber is fixedly connected with a discharge pipe connected with a centrifugal machine, and the discharge pipe is provided with a pump.

9. The manufacturing process of high-purity nano zirconium silicate according to claim 8, characterized in that: the rabbling mechanism includes fixed plate (11) of fixed connection in pickling case (9) upper end lateral wall, the top fixedly connected with rotating electrical machines (12) of fixed plate (11), the drive end of rotating electrical machines (12) runs through fixed plate (11) and fixedly connected with stirring rake (13), and stirring rake (13) extend to in the dialysis chamber.

Technical Field

The invention relates to the technical field of zirconium silicate manufacturing, in particular to a manufacturing process of high-purity nano zirconium silicate.

Background

The chemical stability of zirconium silicate is a high-quality and low-cost opacifier, and can be extensively used in the production of various building ceramics, sanitary ceramics, domestic ceramics and first-class handicraft ceramics, etc., and in the production of ceramic glaze material, its application range is extensive and application quantity is large. The zirconium silicate can be widely applied to ceramic production, and is not influenced by the firing atmosphere of the ceramic due to good chemical stability, and can obviously improve the blank glaze bonding performance of the ceramic and improve the hardness of the ceramic glaze. Zirconium silicate has also found further application in the production of color picture tubes in the television industry, emulsified glass in the glass industry, and enamel glaze.

The high-purity superfine zirconium silicate powder is widely applied to the industries of construction and sanitary ceramics, and plays roles in opacifying and whitening a blank body. In the prior manufacturing process for producing zirconium silicate, the raw material zircon sand is simply washed by water after being ground, and meanwhile, the washed slurry is simply settled, and the sediment containing a large amount of moisture directly enters a drying procedure. The raw materials contain iron impurities after being ground, and if precipitates obtained by simple sedimentation are directly dried, the iron impurities still remain in the product, so that the product has insufficient purity and whiteness; in addition, if the zircon sand is not sufficiently ground, the zircon sand is poor in a solid dispersion state, and particle agglomeration is caused, so that the classification effect is poor.

Therefore, a manufacturing process of high-purity nano zirconium silicate is provided to effectively improve the purification effect of zirconium silicate in the prior art.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a process for manufacturing high-purity nano zirconium silicate.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A manufacturing process of high-purity nano zirconium silicate comprises the following specific manufacturing processes:

s1, selecting 3-6g/cc natural zircon sand as a raw material, and screening and selecting 4-5g/cc natural zircon sand for later use;

s2, placing the zircon sand selected in the S1 into a pulverizer to perform primary grinding, secondary grinding and tertiary grinding, screening by a screening mechanism step by step, and adding a solid dispersing agent in the zircon sand grinding process to obtain zircon powder with the particle fineness of less than 1.0 um;

s3, placing the slurry obtained by pulping the zircon powder into a pickling box, removing iron impurities in the zircon slurry by using hydrochloric acid, and washing and centrifuging by using a centrifuge to obtain slurry precipitate;

s4, drying the slurry precipitate to obtain nano zirconium silicate powder, and removing residual iron in the nano zirconium silicate powder by using an iron remover to obtain the high-purity nano zirconium silicate.

Further, the external fixation of milling machine inlays and is equipped with the shell in S2, the top portion of milling machine is equipped with the feeder hopper, the bottom portion of milling machine sets up out the hopper, the inside rotation meshing of milling machine is connected with the grinding roller group, the upper end fixed mounting of shell inlays and locates the inboard dispersant diffusion mechanism in milling machine upper end, through dispersant diffusion mechanism to the inside injection solid-state dispersion of milling machine, the zircon sand raw materials sneakes into solid-state dispersion when being ground, and solid-state dispersion is effectual, effectively avoids causing the granule to reunite.

Further, dispersant diffusion mechanism is including inlaying the dispersant diffusion case of establishing and installing on the milling machine lateral wall, the bottom portion of dispersant diffusion case extends to inside the milling machine, a plurality of diffusion holes have been seted up on the bottom lateral wall of dispersant diffusion case, fixed mounting has the air-blower on the upper end lateral wall of shell, the air-blower is connected with the inner wall of dispersant diffusion case through the blast pipe, and the dispersant diffusion case is divided into the feeder hopper of upper end and is located the diffusion fill of lower extreme, and the diffusion hole sets up on the diffusion fill, through the leading-in appropriate amount solid state dispersant of feeder hopper, through the blast action of air-blower, realizes leading-in to the milling machine in a plurality of diffusion holes to the solid state dispersant who falls to realize that solid state dispersant mixes with the zircon sand raw materials.

Further, the mechanism of sieving is located out the hopper below, the upper end both sides of shell are all installed and are carried out traction drive's traction vibration mechanism to the mechanism of sieving, the mechanism of sieving is including being located the sieve of the hopper below of crossing, the middle part position department of crossing the sieve inlays to establish and installs the screen cloth, cross both ends fixedly connected with baffle around the sieve, fixed mounting has the otic placode pivot of being connected with shell inner wall rotation on the baffle, and the equal fixedly connected with otic placode in the left and right sides upper end of two baffles, controls the traction vibration mechanism of distribution and realizes driving the left and right elevating movement of the board that sieves, and the powder that falls through going out the hopper filters through the screen cloth, and the powder of qualified particle diameter is through the screen cloth screening, and the powder granule that fails to see through the screen cloth then falls from both ends about in the in-process of rocking about the.

Further, traction vibration mechanism includes through the carry over pinch rolls of support frame fixed mounting on the shell upper end lateral wall, set up on the lateral wall of carry over pinch rolls two with a pair of otic placode position correspond around establishing the groove, around establishing the inslot around establishing and being connected with the haulage rope, shell and fixed connection are run through on the otic placode to the bottom of haulage rope, fixed mounting has the motor that carries out the drive to the carry over pinch rolls on the support frame, thereby drives the otic placode through the haulage rope and moves when the motor drives the carry over pinch rolls and rotates, two motor reverse motions that pull on the vibration mechanism to the screen interval elevating movement that distributes about the realization.

Further, the powder loading case that corresponds with the sieve screen position is placed to the bottom of shell, run through on the both sides lateral wall of shell and inlay and be equipped with the deflector, the both sides outer end of shell has all been placed and has been met workbin with deflector position assorted circulation, and the powder loading case is collected the qualified powder of particle diameter after permeating through the sieve screen and sieving, and the powder granule that fails to see through the screen cloth then in the process of rocking about the sieve plate from the leading-in to circulation that meets the workbin of rethread deflector after both ends fall down, and the circulation meets the powder granule in the workbin and needs the tertiary fineness of second grade to grind to obtain the zircon powder that the granule reaches and is less than 1.0um, can not cause the powder granule that does not select to block on the sieve screen.

Further, fixed mounting has anion homogeneous phase membrane in the pickling case among S3, anion homogeneous phase membrane separates into dialysis chamber and diffusion chamber with the pickling incasement portion, install rabbling mechanism in the dialysis chamber, anion homogeneous phase membrane is provided with the multiunit, through the dialysis principle, comes the separation to get rid of the iron ion.

Furthermore, install thick liquid feed liquor pipe and accept liquid feed liquor pipe respectively on the lateral wall of dialysis room and diffusion chamber, accept the liquid and select the running water for use, the lateral wall fixedly connected with of diffusion chamber has the discharge pipe that is connected with centrifuge, and installs the pump on the discharge pipe, and the concentration of thick liquid is far higher than one side of running water, according to diffusion dialysis principle, because the existence of concentration gradient, thick liquid to diffusion chamber infiltration, but the membrane has the selective permeability to anion, and iron ion is obstructed in the dialysis room, and the iron ion entrapment rate is more than 85%.

Further, rabbling mechanism includes the fixed plate of fixed connection in pickling case upper end lateral wall, the top fixedly connected with rotating electrical machines of fixed plate, fixed plate and fixedly connected with stirring rake are run through to rotating electrical machines's drive end, and in the stirring rake extended to the dialysis chamber, the rabbling mechanism was favorable to improving the dialysis effect.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through carrying out the one-level to zircon sand raw materials and grinding, the second grade is ground, tertiary grinding and sieve the processing through the mechanism step by step, improve the fineness of grind of raw materials, simultaneously at the in-process to raw materials grinding sprays moderate solid state dispersant, zircon sand raw materials sneak into solid state dispersant when being ground, solid state dispersion is effectual, effectively avoid causing the granule to reunite, pass through the pickling dialysis after obtaining the zircon powder that the fineness reaches and is less than 1.0um, most iron impurity in the raw materials is got rid of in the centrifugal washing, utilize the de-ironing separator to get rid of the residual iron in the nanometer zirconium silicate powder to the powder of drying at last, obtain high-purity nanometer zirconium silicate.

(2) The dispersing agent diffusion mechanism comprises a dispersing agent diffusion box and an air blower, wherein the dispersing agent diffusion box is connected with the air blower in a matched mode, the dispersing agent diffusion box is divided into a feed hopper at the upper end and a diffusion hopper at the lower end, diffusion holes are formed in the diffusion hopper, a proper amount of solid dispersing agent is introduced through the feed hopper, and the falling solid dispersing agent is uniformly introduced into the pulverizer from a plurality of diffusion holes under the blowing action of the air blower, so that the solid dispersing agent and zircon sand raw materials are mixed.

(3) The traction vibration mechanism who distributes about realizes driving the left and right elevating movement of sieve plate, the powder that falls through going out the hopper filters through passing through the screen cloth, the powder of qualified particle diameter falls into to the powder loading incasement through the sieve screening selection, and the powder granule that fails to see through the screen cloth then falls down from both ends about the in-process that rocks about the sieve plate, and along with the deflector leading-in to circulation material receiving box, the powder granule in the circulation material receiving box needs the second grade tertiary to grind, reach the zircon powder that is less than 1.0um with the granule fineness of obtainment, the powder granule that can not cause not screening blocks on the sieve net.

(4) Fixed mounting has anion homogeneous phase membrane in the pickling case, and anion homogeneous phase membrane separates into dialysis chamber and diffusion chamber with the pickling incasement portion, installs the rabbling mechanism in the dialysis chamber, and anion homogeneous phase membrane is provided with the multiunit, through the dialysis principle, comes the iron ion separation to get rid of, and the rabbling mechanism is favorable to improving the dialysis effect.

Drawings

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a schematic view of the interior of the mill of the present invention;

FIG. 3 is an external perspective view of the mill of the present invention;

fig. 4 is a perspective view of the screening mechanism of the present invention;

FIG. 5 is a perspective view of the dispersant diffusion mechanism of the present invention;

FIG. 6 is a perspective view of the pickling tank of the present invention.

The reference numbers in the figures illustrate:

1 pulverizer, 101 feed hopper, 102 discharge port, 2 shell, 3 grinding roller group, 4 sieving mechanism, 401 sieving plate, 402 sieving plate, 403 baffle, 404 rotating shaft, 405 ear plate, 5 traction vibration mechanism, 501 traction roller, 502 traction rope, 6 dispersing agent diffusion box, 7 blower, 8 guide plate, 9 pickling box, 10 anion homogeneous membrane, 11 fixed plate, 12 rotating motor and 13 stirring paddle.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.