CN101480813A

CN101480813A - Cleaning energy-saving processing technique of ceramic raw material dry powder prilling

Info

Publication number: CN101480813A
Application number: CNA2009100048071A
Authority: CN
Inventors: 罗明坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-08
Filing date: 2009-01-08
Publication date: 2009-07-15

Abstract

The invention discloses a clean energy-saving production technology for dry powder granulation of ceramic raw materials. The technology adopts a crusher, a material and water transportation device, a powder pipeline transportation device, a mill, a mixing granulator, a fluidized bed dryer and a vibration screen; ceramic raw materials are classified and then separately fed into the jaw crusher one by one for coarse crushing and intermediate crushing; the crushed fine particle materials are fed into the ultra-pressure mill through the transportation device for sequentially and separately fine milling to obtain various single micropowders; the various single micropowders are proportioned according to the formula of ceramic tiles and then fed into a mixer for uniformly mixing, after being homogenized and staled, the fine powders are fed into the mixing granulator; atomized water is sprayed in the mixing granulator for high speed stirring and granulation, the granulated particles are dried by the fluidized bed dryer and then screened by the vibrating screen and staled to obtain fine finished powders for a tile molding machine. The invention has the advantages of little equipment investment, electricity saving, water saving, oil saving, no environment pollution, continuous production and the like, and is suitably for being matched with a large-tonnage ceramic automatic brick molding machine.

Description

The cleaning energy-saving processing technique of ceramic raw material dry powder prilling

Technical field

The present invention relates to the powder preparation technology's that the production Ceramic Tiles uses technical field, particularly dry method powder process prilling.

Background technology

In the past, what domestic ceramic industry mainly adopted was wet granulation process such as spray drying granulation, and it exists equipment investment big, the energy consumption height, and shortcoming such as environmental pollution is big can't satisfy the requirements of the times of environmental protection, energy-conservation production.Begin developmental research ceramic wall and floor bricks dry method flouring technology technology abroad from the beginning of the eighties, promptly raw material adds the water granulation after pulverizing with siccative, to pressing shape powder water content, presses shape behind shelving.In the later stage eighties, more domestic ceramic research institutes use for reference foreign technology and experience, the ceramic wall and floor bricks dry method that begins one's study flouring technology technology.Carry out research and inquirement and obtained certain economic and social benefit from fine grinding of raw material dry method and granulation mechanism aspect; but the dry method powder process granulation production line that the automatic brick machine of large-tonnage that can not satisfy pottery all the time forms a complete production network causes this new technology can not extensively promote at ceramic industry always.At present, ceramics by dry powder process granulation production technology and technology all are the back grindings of formerly preparing burden, because the difference of the physical property of various raw materials, first batch mixes causes mill efficiency low, and causes the prescription deviation at grinding process, can't adapt to large-scale production.Powder granulation technology in medicine and chemical industry has fluidized granulation, fluidized bed prilling, stirring-granulating, extruder grain, fusing granulation etc., but because ceramic industry to the specific (special) requirements of powder particle, can not well refer to ceramic industry always.

Summary of the invention

The objective of the invention is to overcome the defective of above-mentioned prior art, it is few to propose a kind of equipment investment, economize on electricity, water saving, fuel-economizing, non-environmental-pollution, can be continuously produced, be adapted to the cleaning energy-saving processing technique of the supporting ceramic raw material dry powder prilling of the automatic brick machine of large-tonnage pottery.

The objective of the invention is to be achieved through the following technical solutions: the cleaning energy-saving processing technique of ceramic raw material dry powder prilling; equipment is by jaw crusher; hammer mill; impact crusher; raw material and water conveying device; the powdered pipe conveying device; the trapezoidal flour mill of middling speed; the mixing granulation machine; fluidized bed dryer; vibratory sieve is formed; it is characterized in that: each ceramic raw material classification is sent into separately one by one carried out coarse crushing in the jaw crusher; in broken; pass through hammer mill again and impact crusher is in small, broken bits; fine grained raw material classification storage after the fragmentation; send into the trapezoidal flour mill of middling speed by conveying device then and carry out fine grinding separately one by one; obtain various single micro mists; each single micro mist is sent in the mixer by the formulation ratio of Ceramic Tiles and is mixed; after to send into homogenizing storehouse homogenizing old; send into the mixing granulation machine after the homogenizing again; simultaneously atomized water is sprayed into high-speed stirred granulation in the mixing granulation machine chamber; the particle of producing carries out the fluidized bed dryer drying again; then through bolting; old, obtain the class ball-type finished product powder that uses for brick machine.Further, for raising the efficiency, earlier the ceramic raw material classification is crushed to the deposit that puts in storage below the diameter 3mm, it is standby to be lowered to the sealing storehouse to be finely ground to 250 mesh screen residue 1-12%% through the trapezoidal flour mill of middling speed.For shortening the granulation time, to enhance productivity, the speed of mixing granulation machine high-speed stirred is that 300-1800 rev/min, mixing time are that 6-10 minute, the addition of atomized water are 10-15%.For guaranteeing that powder is dry-pressing formed and burn till and have better quality and performance, finished product powder parameter after the dry screening is: the 20-40 order accounts for that 28-35%, 40-60 order account for 38-48%, the 60-80 order accounts for 10-18%, accounts for 5-10% below 80 orders, and finished product powder moisture content 7.0 ± 1.0, yield rate are 70-95%.

Such technology, the present invention has tangible advantage:

1, single raw material separates grinding, by the powder that mixing granulation machine mixing granulation is produced, and the basic recipe zero deflection, the powder grain composition is reasonable, proper sphere rate height, good fluidity, and creativeness is obtaining same effect aspect the ceramic additive color base substrate granulation for powders.

2, this technology 30-50% that will economize on electricity, water saving 60-70% saves fixed investment 30-50%, and energy savings reduces exhaust emission, greatly reduces the production cost of ceramic enterprise.

3, powder good fluidity, steady quality are fit to the large-scale production of ceramic industry.

4, the closed conveying of a whole set of process using, environmentally safe, the powder granulation more capable of circulation that screening is reclaimed, workable.

Description of drawings

Fig. 1 is a process flow diagram of the present invention.

The specific embodiment

Referring to Fig. 1; the cleaning energy-saving processing technique of this ceramic raw material dry powder prilling, equipment include jaw crusher, hammer mill and impact crusher, raw material and water conveying device, powdered pipe conveying device, the trapezoidal flour mill of middling speed, mixing granulation machine, fluidized bed dryer, vibratory sieve.A whole set of technology before this by jaw crusher with the single coarse crushing of classifying of each ceramic raw material; in broken; pass through hammer mill again and impact crusher is in small, broken bits; with ceramic raw material as sand; classification such as mud are crushed to the deposit that puts in storage below the diameter 3mm; by belt conveyor the fine grained raw material is delivered to the single fine grinding of classifying of the trapezoidal flour mill of middling speed; be finely ground to 250 mesh screen residues below 2% through the trapezoidal flour mill of middling speed; requiring electronics metering sealing to be delivered in the mixer according to the ceramic body prescription then mixes; it is old to send into homogenizing storehouse homogenizing; send into the mixing granulation machine after the homogenizing again; high-speed stirred is mixed; the speed of high-speed stirred is 1200-1800 rev/min; mixing time is 6-10 minute; by adjusting the adding speed of atomized water; addition; controlling powder granularity and grating distributes; granulation is sent into the fluidized bed dryer drying after finishing; to moisture content 6.5, then through bolting, it is old to go into filler bin.For guaranteeing powder dry-pressing formed and burn till and have better quality and performance, the granulation parameter generally is controlled to be: the powder parameter of dry screening is: 20-40 accounts for that order 28-35%, 40-60 order account for that 38-48%, 60-80 order account for 10-18%, account for 5-10% below 80 orders, finished product powder moisture content 7.0 ± 1.0, yield rate are 70-95%.。

Certainly, only enumerated a kind of preferred implementation here, the protection category that other is equal to, structure roughly the same all should belong to this patent repeats no more here.

Claims

1; the cleaning energy-saving processing technique of ceramic raw material dry powder prilling; equipment is by jaw crusher; hammer mill; impact crusher; raw material and water conveying device; the powdered pipe conveying device; the trapezoidal flour mill of middling speed; the mixing granulation machine; fluidized bed dryer; vibratory sieve is formed; it is characterized in that: each ceramic raw material classification is sent into separately one by one carried out coarse crushing in the jaw crusher; in broken; pass through hammer mill again and impact crusher is in small, broken bits; fine grained raw material classification storage after the fragmentation; send into the trapezoidal flour mill of middling speed by conveying device then and carry out fine grinding separately one by one; obtain various single micro mists; each single micro mist is sent in the mixer by the formulation ratio of Ceramic Tiles and is mixed; after to send into homogenizing storehouse homogenizing old; send into the mixing granulation machine after the homogenizing again; simultaneously atomized water is sprayed into high-speed stirred granulation in the mixing granulation machine chamber; the particle of producing carries out the fluidized bed dryer drying again; then through bolting; old, obtain the class ball-type finished product powder that uses for brick machine.

2, the cleaning energy-saving processing technique of ceramic raw material dry powder prilling according to claim 1, it is characterized in that earlier the ceramic raw material classification being crushed to the deposit that puts in storage below the diameter 3mm, it is standby to be lowered to the sealing storehouse to be finely ground to 250 mesh screen residue 1-12% through the trapezoidal flour mill of middling speed.

3, the cleaning energy-saving processing technique of ceramic raw material dry powder prilling according to claim 1 and 2, the speed that it is characterized in that mixing granulation machine high-speed stirred are that 300-1800 rev/min, mixing time are that 6-10 minute, the addition of atomized water are 10-15%.

4, the cleaning energy-saving processing technique of ceramic raw material dry powder prilling according to claim 1 and 2, it is characterized in that the finished product powder parameter after the dry screening is: the 20-40 order accounts for that 28-35%, 40-60 order account for 38-48%, the 60-80 order accounts for 10-18%, accounts for 5-10% below 80 orders, and finished product powder moisture content 7.0 ± 1.0, yield rate are 70-95%.