阅读说明：本技术 一种基于物理提纯技术生产陶瓷原料的方法及产品 (Method for producing ceramic raw material based on physical purification technology and product ) 是由 陈小平 王玉臣 李贵国 于 2019-10-18 设计创作，主要内容包括：本发明涉及一种基于物理提纯技术生产陶瓷原料的方法及产品,属于陶瓷材料技术领域,该方法具体为：(1)将花岗岩石料依次破碎至粒径为300mm以下、小于150mm、小于30mm、小于7mm,然后将粒径小于7mm的花岗岩石料进行湿法球磨,获得浆料,最后将所述浆料加入受阻沉降器中,获得粒径为0.18-0.25mm的花岗岩石料；(2)将粒径为0.18-0.25mm的花岗岩石料放入磁选机中进行磁选至去除所述花岗岩石料中微弱磁性物质,制得陶瓷原料。以该方法获得陶瓷原料烧制的陶瓷白度大于65-70度,晶莹透体、油润光亮、洁白如玉,该方法简单易操作,且成本低,适合工业化生产。(The invention relates to a method for producing ceramic raw materials based on a physical purification technology and a product, belonging to the technical field of ceramic materials, and the method specifically comprises the following steps: (1) sequentially crushing granite stones to the particle size of below 300mm, less than 150mm, less than 30mm and less than 7mm, then carrying out wet ball milling on the granite stones with the particle size of less than 7mm to obtain slurry, and finally adding the slurry into a hindered settler to obtain the granite stones with the particle size of 0.18-0.25 mm; (2) putting the granite stones with the grain size of 0.18-0.25mm into a magnetic separator for magnetic separation until weak magnetic substances in the granite stones are removed, and preparing the ceramic raw material. The ceramic fired by the ceramic raw material obtained by the method has the whiteness of more than 65-70 degrees, is crystal transparent, oily, bright, clean and white like jade, and the method is simple and easy to operate, has low cost and is suitable for industrial production.)

1. A method for producing ceramic raw material based on physical purification technology, characterized in that the method comprises the following steps:

(1) sequentially crushing granite stones to the particle size of below 300mm, less than 150mm, less than 30mm and less than 7mm, then carrying out wet ball milling on the granite stones with the particle size of less than 7mm to obtain slurry, and finally adding the slurry into a hindered settler to obtain the granite stones with the particle size of 0.18-0.25 mm;

(2) and (2) placing the granite stones with the grain size of 0.18-0.25mm obtained in the step (1) into a magnetic separator for magnetic separation until weak magnetic substances in the granite stones are removed, and preparing the ceramic raw material.

2. The method of claim 1, wherein step (2) further comprises drying the ceramic raw material to obtain a dried ceramic raw material.

3. The method according to claim 2, wherein the drying process is specifically: and (3) drying the ceramic raw material in a drying machine with the inlet temperature of 400-600 ℃ and the outlet temperature of 80-150 ℃ for 20-25 min.

4. The method of claim 2, wherein step (2) further comprises subjecting the dried ceramic raw material to a grinding process to obtain a ground ceramic raw material.

5. The method according to claim 4, wherein the grinding treatment is in particular: and grinding the dried ceramic raw material to 200 meshes to be fine.

6. The method as claimed in any one of claims 1 to 5, wherein in step (1), the granite stone is crushed to a particle size of 300mm or less in a coarse stage, then crushed to a particle size of less than 150mm in a secondary stage, crushed to a particle size of less than 30mm in a conical stage, and finally crushed to a particle size of less than 7mm in an impact sand making machine.

7. The method as claimed in any one of claims 1 to 5, wherein in step (2), the magnetic separation is carried out in four stages, first in a wet drum magnetic separator with a magnetic force of 4500-5500 gauss; then carrying out magnetic separation under a flat magnetic separator with magnetic force of 8000-11000 gauss; then carrying out magnetic separation under a vertical ring pulsating high gradient magnetic separator with the magnetic force of more than 13000 gausses; and finally, carrying out magnetic separation under a vertical ring pulsating high-gradient magnetic separator with the magnetic force of more than 13000 gausses.

8. A ceramic feedstock produced by the method of claims 1-7.

Technical Field

The invention belongs to the technical field of ceramic materials, and particularly relates to a method for producing a ceramic raw material based on a physical purification technology and a product.

Background

The feldspar is one of two stones and one soil (feldspar, quartz and kaolin) which are main raw materials of the ceramic industry, the ceramic in China has a long history and is a nasty country for producing porcelain, along with the continuous development of material science, in order to meet the ceramic industry, a solvent type raw material which is one of basic main materials belongs to open-air mining at home, the mined mine is sore and porous, the ecological environment is seriously damaged, the quality is high or low, the quality cannot be controlled, the quality is gradually deteriorated, the development of the ceramic industry is seriously restricted, a single type of pure feldspar in the nature is few, and the feldspar with higher quality is increasingly deficient.

In the 70 s, experts have proposed granite stones as a substitute for feldspar raw materials used in the ceramic industry. In the practical application process, the mineral components of the granite stone mainly comprise feldspar, quartz crystals and other impurities, wherein the feldspar and the quartz have two forms in the granite stone, one form is large-particle crystallization, and the feldspar and the quartz are extremely clear in phase; the other is small-particle crystalline, which can be distinguished by naked eyes. However, in the formation process of the granite stone parent rock, the granite stone is difficult to be applied to the ceramic industry instead of feldspar due to the immersion of magnetic substances such as siderite, hematite, garnet, biotite and limonite. Therefore, a method for preparing a ceramic raw material from granite stone is urgently needed.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a method for producing ceramic raw material based on physical purification technology; the second purpose is to provide a ceramic raw material.

In order to achieve the purpose, the invention provides the following technical scheme:

1. a method for producing ceramic raw material based on physical purification technology, the method comprising the steps of:

(1) sequentially crushing granite stones to the particle size of below 300mm, less than 150mm, less than 30mm and less than 7mm, then carrying out wet ball milling on the granite stones with the particle size of less than 7mm to obtain slurry, and finally adding the slurry into a hindered settler to obtain the granite stones with the particle size of 0.18-0.25 mm;

(2) and (2) placing the granite stones with the grain size of 0.18-0.25mm obtained in the step (1) into a magnetic separator for magnetic separation until weak magnetic substances in the granite stones are removed, and preparing the ceramic raw material.

Preferably, the step (2) further includes drying the ceramic raw material to obtain a dried ceramic raw material.

Preferably, the drying treatment specifically comprises: and (3) drying the ceramic raw material in a drying machine with the inlet temperature of 400-600 ℃ and the outlet temperature of 80-150 ℃ for 20-25 min.

Preferably, the step (2) further includes grinding the dried ceramic raw material to obtain a ground ceramic raw material.

Preferably, the grinding treatment is specifically: and grinding the dried ceramic raw material to 200 meshes to be fine.

Preferably, in the step (1), the granite stone is coarsely crushed to a particle size of less than 300mm, then is secondarily crushed to a particle size of less than 150mm, is secondarily crushed to a particle size of less than 30mm by a cone, and is finally crushed to a particle size of less than 7mm by an impact sand making machine.

Preferably, in the step (2), the magnetic separation is completed in four stages, and the magnetic separation is firstly carried out in a wet roller magnetic separator with the magnetic force of 4500-; then carrying out magnetic separation under a flat magnetic separator with magnetic force of 8000-11000 gauss; then carrying out magnetic separation under a vertical ring pulsating high gradient magnetic separator with the magnetic force of more than 13000 gausses; and finally, carrying out magnetic separation under a vertical ring pulsating high-gradient magnetic separator with the magnetic force of more than 13000 gausses.

2. A ceramic starting material prepared by the method.

The invention has the beneficial effects that: the invention provides a method for producing ceramic raw materials based on a physical purification technology and a product, wherein the method adopts a full physical process production technology, granite stones are firstly subjected to four-stage crushing and one-stage grinding and then treated by a hindered settler to obtain the granite stones with the particle size of 0.18-0.25mm, at the moment, three ore bodies of feldspar, quartz and mica in the granite stones are completely separated, and then the granite stones are subjected to four-stage magnetic separation to effectively remove harmful element magnetic substances in the granite stones, so that the ceramic industrial quality requirements are finally met. Firstly, carrying out magnetic separation in a wet type roller magnetic separator with the magnetic force of 4500-5500 gauss, and completely removing mechanical iron brought by front production in granite stones; then, magnetic separation is carried out under a flat magnetic separator with magnetic force of 8000-11000 gauss, and magnetic substances such as weak iron, biotite, limonite, hematite and the like in most granite stones can be removed; then, magnetic separation is carried out under a vertical ring pulsating high gradient magnetic separator with the magnetic force larger than 13000 gauss, so that the weak iron part which is not completely removed by the magnetic separation at the front part in the granite stone can be removed; and finally, carrying out magnetic separation under a vertical ring pulsating high gradient magnetic separator with the magnetic force of more than 13000 gausses, so that weak magnetic substances which are not removed by the magnetic separation at the middle front part of the granite stone can be removed. The ceramic fired by the ceramic raw material obtained by the method has the whiteness of more than 65-70 degrees, is crystal transparent, oily, bright, clean and white like jade, and the method is simple and easy to operate, has low cost and is suitable for industrial production.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a diagram of a granite stone used in the preparation of a ceramic material according to the present invention;

FIG. 2 is a schematic representation of a ceramic starting material prepared in example 1;

FIG. 3 is a diagram of a dried ceramic material object prepared in example 1;

FIG. 4 is a pictorial representation of a milled ceramic starting material as prepared in example 1;

FIG. 5 is a pictorial representation of a ceramic product made from the ground ceramic starting material prepared in example 1;

FIG. 6 is a pictorial view of a ceramic starting material prepared in example 2;

FIG. 7 is a diagram of dried ceramic raw material prepared in example 2;

FIG. 8 is a pictorial representation of a milled ceramic starting material as prepared in example 2;

FIG. 9 is a pictorial representation of a ceramic product made from the ground ceramic starting material prepared in example 2;

FIG. 10 is a pictorial view of a ceramic starting material prepared in example 3;

FIG. 11 is a diagram of a dried ceramic starting material prepared in example 3;

FIG. 12 is a pictorial representation of a milled ceramic starting material prepared in example 3;

fig. 13 is a schematic view of a ceramic product produced from the ground ceramic starting material produced in example 3.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.