阅读说明：本技术 一种可循环利用铸造石膏的制备方法及设备 (Preparation method and equipment of casting gypsum capable of being recycled ) 是由 古大平 朱伟国 陆文艺 郭文涛 陆永初 董小明 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种可循环利用铸造石膏的制备方法及设备,包括以下操作步骤：步骤S1、废料粉碎；步骤S2、搅拌溶解；步骤S3、挤压溶解过滤；步骤S4、加入二氧化碳；步骤S5：高温烘干；步骤S6：超声波分离；本发明的通过螺纹循环结构将大于一定大小的废料重新循环研磨,通过离心震动结构,将研磨釜废料分别甩到螺纹循环结构以及搅拌釜内,通过高温烘干箱上的烘干结构将CaCo3的高温分解生成氧化钙CaO和二氧化碳CO2,CaCO3(高温)＝CaO+CO2↑,从而循环利用生石灰的效果。(The invention discloses a preparation method and equipment of recyclable casting gypsum, which comprises the following operation steps: step S1, crushing waste materials; step S2, stirring and dissolving; step S3, squeezing, dissolving and filtering; step S4, adding carbon dioxide; step S5: drying at high temperature; step S6: ultrasonic separation; the waste materials larger than a certain size are recycled and ground through the threaded circulation structure, the waste materials of the grinding kettle are thrown into the threaded circulation structure and the stirring kettle respectively through the centrifugal vibration structure, the CaCo3 is decomposed at high temperature through the drying structure on the high-temperature drying box to generate calcium oxide CaO and carbon dioxide CO2, CaCO3 (high temperature) ═ CaO + CO2 ×) and therefore the effect of quicklime is recycled.)

1. A preparation method of recyclable casting gypsum comprises the following operation steps: step S1, crushing waste materials; step S2, stirring and dissolving; step S3, squeezing, dissolving and filtering; step S4, adding carbon dioxide; step S5: drying at high temperature; step S6: ultrasonic separation;

step S1: pouring the waste building materials into a crushing device, and crushing and grinding the waste building materials into powder;

step S2: pouring the ground waste into a stirring device, and dissolving the ground raw materials in low-temperature water;

step S3: adding the dissolved liquid into an extrusion device, and injecting water and low-temperature water into the extrusion device to completely dissolve the hydrated lime;

step S4: adding carbon dioxide into the slightly melted slaked lime after filtration;

step S5: under the high-temperature condition, CaCO3 can be decomposed into calcium oxide CaO (quicklime) and carbon dioxide CO 2;

step S6: the quicklime is vibrated into powder by vibration.

2. The method for preparing recyclable casting gypsum according to claim 1, wherein the step S1 is to recycle the waste materials to a particle size of more than 10 mm to less than 25 mm to facilitate the dissolution of the particles.

3. The method and apparatus for preparing recycled foundry gypsum as claimed in claim 1, wherein the ground material obtained in step S2 is poured into water of about 10 ° to make slaked lime more easily dissolved in low temperature water, and the mixture is separated from impurities by pressing with a pressing device in step S3.

4. The method of claim 1, wherein the step S4 is performed by ca (oh)2+ CO 2-CaCO 3-H2O to convert the slaked lime into calcium carbonate, which is insoluble in water, so as to filter out the calcium carbonate.

5. The method and apparatus for preparing recyclable casting gypsum as claimed in claim 1, wherein the temperature of the dried calcium carbonate in step S5 is always above 910 ° to decompose the calcium carbonate more rapidly and completely.

6. The preparation equipment of the recyclable casting gypsum comprises a grinding tower (1), a stirring kettle (2), a pressure filter (3), a reaction kettle (4) and a high-temperature drying box (5), and is characterized in that the grinding tower (1) is connected to the stirring kettle (2), the stirring kettle (2) is connected to the pressure filter (3), the pressure filter (3) is connected to the reaction kettle (4), the reaction kettle (4) is connected to the high-temperature drying box (5), a crushing circulation structure is installed in the grinding tower (1), a stirring structure is installed in the stirring kettle (2), and a drying structure is installed in the high-temperature drying box (5);

the pulverizing circulation structure comprises: a large crusher (6), a small crusher (7), a grinder (8), a centrifugal vibration structure, a screening net (9) and a thread circulation structure;

install in grinding tower (1) large size breaker (6), install in grinding tower (1) small size breaker (7), just small size breaker (7) are located large size breaker (6) discharge gate department, install in grinding tower (1) grinding machine (8), just grind machine (8) and be located small size breaker (7) discharge gate department, centrifugal shock structure installs on grinding tower (1) bottom, screening net (9) are installed in grinding tower (1), the screw thread circulation structure installs on grinding tower (1) outside.

7. The apparatus for preparing recyclable casting gypsum according to claim 6, wherein the centrifugal vibration structure comprises: the device comprises a centrifugal vibration inner box (10), a screening driving machine (11), a driving wheel (12), a driving wheel (13), a transmission shaft (14), a pair of transmission bearings (15) with the same structure, a pair of counterweight wheels (16) with the same structure, two pairs of umbrella-shaped counterweight blocks (17) with the same structure and a transmission belt (18);

the centrifugal vibration inner box (10) is installed on the bottom end of the inner side of the grinding tower (1), the screening driving machine (11) is installed on the inner side of the centrifugal vibration inner box (10), the transmission shaft (14) is movably inserted into the centrifugal vibration inner box (10), the driving wheel (12) is installed on the driving end of the screening driving machine (11), the transmission wheel (13) is installed on the transmission shaft (14), the transmission belt (18) is sleeved on the driving wheel (12) and the transmission wheel (13), the counterweight wheel (16) is installed on the transmission shaft (14) in a pair, the counterweight wheel (16) is located on two sides of the transmission wheel (13), and the umbrella-shaped counterweight blocks (17) are installed on the counterweight wheels (16) respectively.

8. The apparatus for producing recyclable casting gypsum according to claim 7, wherein the screw circulation structure comprises a circulation pipe (19), a circulation driver (20), a circulation screw (21), and a circulation rotation shaft (22);

the grinding tower (1) is provided with a circulating inlet (23) and a circulating inlet (24), the circulating inlet (23) is located above the centrifugal vibration inner box (10), the circulating outlet is located above the grinding machine (8), the circulating pipe (19) is installed on the outer side of the grinding tower (1), the circulating pipe (19) is connected to the circulating inlet (23) and the circulating inlet (24), the circulating driving machine (20) is installed above the circulating pipe (19), the circulating rotating shaft (22) is inserted on the circulating pipe (19), the circulating rotating shaft (22) is connected to the driving end of the circulating driving machine (20), and the circulating spiral blade (21) is installed on the circulating rotating shaft (22).

9. The apparatus of claim 6, wherein the stirring structure comprises: two pairs of stirring shafts (25) with the same structure, a plurality of stirring blades (26) with the same structure, two pairs of stirring gears (27) with the same structure, a stirring driving gear (28) and a stirring driving machine (29);

two pairs of (mixing) shaft (25) pass through the movable cartridge of bearing in stirred tank (2), a plurality of stirring leaf (26) are installed respectively in two pairs on stirring leaf (26), two pairs stirring gear (27) are installed respectively in two pairs on (mixing) shaft (25), stirring driver (29) are installed on stirred tank (2) bottom, stirring driver gear (28) are installed on stirring driver (29) drive end, just stirring driver gear (28) and two pairs stirring gear (27) gear engagement.

10. The apparatus of claim 6, wherein the drying structure comprises: the drying internal support (30), a plurality of drying plates (31) with the same structure, a plurality of scissor-type support rods (32) with the same structure, two pairs of lifting driving machines (33) with the same structure, two pairs of telescopic chains (34) with the same structure, a plurality of electric heating pipes (35) with the same structure and two pairs of electric heating support pipes (36) with the same structure;

the drying inner support (30) is arranged in the high-temperature drying box (5), the drying plates (31) are uniformly and movably arranged in the drying inner support (30), the scissor type support rods (32) are arranged on the drying plates (31), two pairs of lifting drivers (33) are respectively arranged on the drying inner support (30), two pairs of telescopic chains (34) are respectively arranged on the driving ends of the two pairs of lifting drivers (33), the other ends of the two pairs of telescopic chains (34) are connected to the drying plate (31), the electric heating tubes (35) are uniformly arranged on the inner side of the high-temperature drying box (5), the two pairs of electric heating support tubes (36) are inserted in the drying plates (31) in a pairwise parallel mode, and the drying plates (31) are respectively provided with an ultrasonic vibrator (37).

Technical Field

The invention relates to the technical field of waste recovery, in particular to a preparation method and equipment of casting gypsum capable of being recycled.

Background

Gypsum is a monoclinic mineral and is a hydrate whose main chemical component is calcium sulfate (CaSO 4). Gypsum is a widely used industrial and building material. Can be used for cement retarders, gypsum building products, model making, medical food additives, sulfuric acid production, paper fillers, paint fillers and the like. The gypsum and its products have fine sound-proof, heat-insulating and fire-proof properties due to the microporous structure and heat-dewatering property.

The acid waste gypsum belongs to dangerous waste and is generally mixed with organic matters, heavy metals and the like. Generally, a temporary stacking disposal method or a landfill method is adopted, secondary pollution is caused by stacking, the landfill treatment cost is high, and the serious waste of sulfur resources is caused. Because of the shortage of mineral resources of gypsum, the market demand of gypsum is increasing day by day, the price is rising continuously, and the contradiction between supply and demand is prominent. However, in the ceramic production, a large amount of waste gypsum is generated and cannot be reused, the waste gypsum accumulates day by day and month, and the waste is accumulated like a mountain to influence the environment, and a large amount of energy and manpower and material resources are consumed in the process of treating the waste.

Disclosure of Invention

The invention aims to solve the problems, designs a preparation method and equipment of recyclable casting gypsum, and solves the problem that a large amount of waste gypsum is produced in the existing ceramic production and cannot be reused.

The technical scheme of the invention for realizing the aim is as follows: a preparation method and equipment of recyclable casting gypsum comprise the following operation steps: step S1, crushing waste materials; step S2, stirring and dissolving; step S3, squeezing, dissolving and filtering; step S4, adding carbon dioxide; step S5: drying at high temperature; step S6: ultrasonic separation;

step S1: pouring the waste building materials into a crushing device, and crushing and grinding the waste building materials into powder;

step S2: pouring the ground waste into a stirring device, and dissolving the ground raw materials in low-temperature water;

step S3: adding the dissolved liquid into an extrusion device, and injecting water and low-temperature water into the extrusion device to completely dissolve the hydrated lime;

step S4: adding carbon dioxide into the slightly melted slaked lime after filtration;

step S5: under the high-temperature condition, CaCO3 can be decomposed into calcium oxide CaO (quicklime) and carbon dioxide CO 2;

step S6: vibrating the quicklime into powder by vibration;

step S1, the waste raw materials are circularly ground to a particle grade of more than 10 mm to less than 25 mm, so that the particles are conveniently dissolved;

pouring the raw materials ground in the step S2 into water of about 10 ° to make slaked lime more easily dissolved in low-temperature water, and extruding and separating the mixed liquid and impurities by an extruding device in the step S3;

step S4, converting slaked lime into calcium carbonate by using ca (oh)2+ CO2 ═ CaCO3+ H2O, the calcium carbonate being insoluble in water, thereby achieving filtration of the calcium carbonate;

the temperature of the dried calcium carbonate in the step S5 is always above 910 ℃, so that the decomposition of the calcium carbonate is quicker and more thorough;

a preparation method and equipment of recyclable casting gypsum comprise a grinding tower, a stirring kettle, a pressure filter, a reaction kettle and a high-temperature drying box, wherein the grinding tower is connected to the stirring kettle, the stirring kettle is connected to the pressure filter, the pressure filter is connected to the reaction kettle, the reaction kettle is connected to the high-temperature drying box, a crushing circulation structure is installed in the grinding tower, a stirring structure is installed in the stirring kettle, and a drying structure is installed in the high-temperature drying box;

the pulverizing circulation structure comprises: a large crusher, a small crusher, a grinder, a centrifugal vibration structure, a screening net and a thread circulation structure;

the large crusher is arranged in the grinding tower, the small crusher is positioned at the discharge port of the large crusher, the grinding machine is arranged in the grinding tower, the grinding machine is positioned at the discharge port of the small crusher, the centrifugal vibration structure is arranged at the bottom end of the grinding tower, the screening net is arranged in the grinding tower, and the thread circulation structure is arranged on the outer side of the grinding tower;

the centrifugal vibration structure comprises: the screening and driving device comprises a centrifugal vibration inner box, a screening driving machine, a driving wheel, a transmission shaft, a pair of transmission bearings with the same structure, a pair of counter weight wheels with the same structure, two pairs of umbrella-shaped counter weights with the same structure and a transmission belt;

the centrifugal vibration inner box is arranged at the bottom end of the inner side of the grinding tower, the screening driving machine is arranged at the inner side of the centrifugal vibration inner box, the transmission shaft is movably inserted on the centrifugal vibration inner box, the driving wheel is arranged at the driving end of the screening driving machine, the transmission wheel is arranged on the transmission shaft, the transmission belt is sleeved on the driving wheel and the transmission wheel, a pair of the balance weight wheels is arranged on the transmission shaft, the pair of the balance weight wheels are positioned on the two sides of the transmission wheel, and two pairs of umbrella-shaped balance weights are respectively arranged on the pair of the balance weight;

the screw thread circulating structure comprises a circulating pipe, a circulating driver, a circulating helical blade and a circulating rotating shaft;

the grinding tower is provided with a circulation inlet and a circulation outlet, the circulation inlet is positioned above the centrifugal vibration inner box, the circulation outlet is positioned above the grinding machine, the circulation pipe is arranged outside the grinding tower and connected to the circulation inlet and the circulation inlet, the circulation driving machine is arranged above the circulation pipe, the circulation rotating shaft is inserted on the circulation pipe and connected to the driving end of the circulation driving machine, and the circulation spiral blade is arranged on the circulation rotating shaft;

the stirring structure includes: the stirring device comprises two pairs of stirring shafts with the same structure, a plurality of stirring blades with the same structure, two pairs of stirring gears with the same structure, a stirring driving gear and a stirring driving machine;

the stirring shafts are movably inserted into the stirring kettle through bearings, the stirring blades are respectively arranged on the two pairs of stirring blades, the two pairs of stirring gears are respectively arranged on the two pairs of stirring shafts, the stirring driver is arranged at the bottom end of the stirring kettle, the stirring driving gear is arranged at the driving end of the stirring driver, and the stirring driving gear is meshed with the two pairs of stirring gears;

the drying structure includes: the drying internal support, a plurality of drying plates with the same structure, a plurality of scissor-type support rods with the same structure, two pairs of lifting drivers with the same structure, two pairs of telescopic chains with the same structure, a plurality of electric heating pipes with the same structure and two pairs of electric heating support pipes with the same structure;

the drying inner support is arranged in a high-temperature drying box, a plurality of drying plates are uniformly and movably arranged in the drying inner support, a plurality of scissor-type supporting rods are arranged on the plurality of drying plates in a distributed mode, two pairs of lifting drivers are arranged on the drying inner support respectively, two pairs of telescopic chains are arranged on driving ends of the two pairs of lifting drivers respectively, the other ends of the two pairs of telescopic chains are connected to the drying plates, a plurality of electric heating tubes are uniformly arranged on the inner side of the high-temperature drying box, two pairs of electric heating supporting tubes are inserted into the plurality of drying plates in a pairwise parallel mode, and ultrasonic vibrators are arranged on the plurality of drying plates respectively.

According to the preparation method and the equipment for the recyclable cast gypsum manufactured by the technical scheme, waste materials larger than a certain size are recycled and ground through the threaded circulation structure, the waste materials of the grinding kettle are thrown into the threaded circulation structure and the stirring kettle respectively through the centrifugal vibration structure, the CaCo3 is decomposed at high temperature through the drying structure on the high-temperature drying box to generate calcium oxide CaO and carbon dioxide CO2, CaCO3 (high temperature) ═ CaO + CO2 × (ii), and therefore the effect of quicklime is recycled.

Drawings

FIG. 1 is a schematic sectional view of the recyclable casting gypsum manufacturing method and apparatus of the present invention.

FIG. 2 is a schematic top cross-sectional view of a method and apparatus for making recyclable casting gypsum according to the present invention.

FIG. 3 is a schematic top cross-sectional view of a grinding tower for a method and apparatus for making recyclable casting gypsum according to the present invention.

FIG. 4 is a schematic cross-sectional side view of a trapezoidal section of a method and apparatus for making recyclable casting gypsum according to the present invention.

FIG. 5 is a schematic view of the centrifugal vibration structure of the method and apparatus for manufacturing recyclable casting gypsum according to the present invention.

FIG. 6 is a schematic view of the screw circulation structure of the method and apparatus for preparing recyclable casting gypsum according to the present invention.

In the figure: 1-a grinding tower; 2-stirring the mixture in a kettle; 3, a filter press; 4-a reaction kettle; 5-high temperature drying box; 6-large size crusher; 7-small size crusher; 8-a grinder; 9-screening the net; 10-centrifugally shaking the inner box; 11-screening driver; 12-a driving wheel; 13-a transmission wheel; 14-a drive shaft; 15-a drive bearing; 16-a counterweight wheel; 17-umbrella-shaped balancing weight; 18-a transfer belt; 19-a circulation pipe; 20-circulating a driver; 21-circulating helical blades; 22-a cyclic rotation axis; 23-a recycle inlet; 24-a recycle inlet; 25-stirring shaft; 26-stirring blade; 27-a stirring gear; 28-stirring driving gear; 29-a stirring driver; 30-drying the inner support; 31-drying the plate; 32-scissor support rods; 33-a lift drive; 34-a telescopic chain; 35-electric heating tubes; 36-electrothermal support tube; 37-ultrasonic vibrator.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings, and as shown in fig. 1-5, a method and apparatus for making recyclable casting gypsum includes the following steps: step S1, crushing waste materials; step S2, stirring and dissolving; step S3, squeezing, dissolving and filtering; step S4, adding carbon dioxide; step S5: drying at high temperature; step S6: ultrasonic separation; step S1: pouring the waste building materials into a crushing device, and crushing and grinding the waste building materials into powder; step S2: pouring the ground waste into a stirring device, and dissolving the ground raw materials in low-temperature water; step S3: adding the dissolved liquid into an extrusion device, and injecting water and low-temperature water into the extrusion device to completely dissolve the hydrated lime; step S4: adding carbon dioxide into the slightly melted slaked lime after filtration; step S5: under the high-temperature condition, CaCO3 can be decomposed into calcium oxide CaO (quicklime) and carbon dioxide CO 2; step S6: vibrating the quicklime into powder by vibration; step S1, the waste raw materials are circularly ground to a particle grade of more than 10 mm to less than 25 mm, so that the particles are conveniently dissolved; pouring the raw materials ground in the step S2 into water of about 10 ° to make slaked lime more easily dissolved in low-temperature water, and extruding and separating the mixed liquid and impurities by an extruding device in the step S3; step S4, converting slaked lime into calcium carbonate by using ca (oh)2+ CO2 ═ CaCO3+ H2O, the calcium carbonate being insoluble in water, thereby achieving filtration of the calcium carbonate; the temperature of the dried calcium carbonate in the step S5 is always above 910 ℃, so that the decomposition of the calcium carbonate is quicker and more thorough;

a preparation method and equipment of recyclable casting gypsum comprise a grinding tower 1, a stirring kettle 2, a filter press 3, a reaction kettle 4 and a high-temperature drying box 5, wherein the grinding tower 1 is connected to the stirring kettle 2, the stirring kettle 2 is connected to the filter press 3, the filter press 3 is connected to the reaction kettle 4, the reaction kettle 4 is connected to the high-temperature drying box 5, a crushing circulation structure is installed in the grinding tower 1, a stirring structure is installed in the stirring kettle 2, and a drying structure is installed in the high-temperature drying box 5; the pulverizing circulation structure comprises: a large crusher 6, a small crusher 7, a grinder 8, a centrifugal vibration structure, a screening net 9 and a thread circulation structure; the large crusher 6 is arranged in the grinding tower 1, the small crusher 7 is positioned at the discharge port of the large crusher 6, the grinding machine 8 is arranged in the grinding tower 1, the grinding machine 8 is positioned at the discharge port of the small crusher 7, the centrifugal vibration structure is arranged at the bottom end of the grinding tower 1, the sieving net 9 is arranged in the grinding tower 1, and the thread circulation structure is arranged on the outer side of the grinding tower 1; the centrifugal vibration structure comprises: the device comprises a centrifugal vibration inner box 10, a screening driving machine 11, a driving wheel 12, a driving wheel 13, a transmission shaft 14, a pair of transmission bearings 15 with the same structure, a pair of counterweight wheels 16 with the same structure, two pairs of umbrella-shaped counterweight blocks 17 with the same structure and a transmission belt 18; the centrifugal vibration inner box 10 is arranged at the bottom end of the inner side of the grinding tower 1, the screening driving machine 11 is arranged at the inner side of the centrifugal vibration inner box 10, the transmission shaft 14 is movably inserted into the centrifugal vibration inner box 10, the driving wheel 12 is arranged at the driving end of the screening driving machine 11, the transmission wheel 13 is arranged on the transmission shaft 14, the transmission belt 18 is sleeved on the driving wheel 12 and the transmission wheel 13, the pair of counterweight wheels 16 is arranged on the transmission shaft 14, the pair of counterweight wheels 16 is positioned at two sides of the transmission wheel 13, and the two pairs of umbrella-shaped counterweight blocks 17 are respectively arranged on the pair of counterweight wheels 16; the screw circulation structure comprises a circulation pipe 19, a circulation driver 20, a circulation helical blade 21 and a circulation rotation shaft 22; the grinding tower 1 is provided with a circulation inlet 23 and a circulation outlet 24, the circulation inlet 23 is positioned above the centrifugal vibration inner box 10, the circulation outlet is positioned above the grinding machine 8, the circulation pipe 19 is installed outside the grinding tower 1, the circulation pipe 19 is connected to the circulation inlet 23 and the circulation outlet 24, the circulation driver 20 is installed above the circulation pipe 19, the circulation rotating shaft 22 is inserted on the circulation pipe 19, the circulation rotating shaft 22 is connected to the driving end of the circulation driver 20, and the circulation spiral blade 21 is installed on the circulation rotating shaft 22; the stirring structure includes: two pairs of stirring shafts 25 with the same structure, a plurality of stirring blades 26 with the same structure, two pairs of stirring gears 27 with the same structure, a stirring driving gear 28 and a stirring driving machine 29; the two pairs of stirring shafts 25 are movably inserted into the stirring kettle 2 through bearings, the plurality of stirring blades 26 are respectively installed on the two pairs of stirring blades 26, the two pairs of stirring gears 27 are respectively installed on the two pairs of stirring shafts 25, the stirring driver 29 is installed at the bottom end of the stirring kettle 2, the stirring driving gear 28 is installed at the driving end of the stirring driver 29, and the stirring driving gear 28 is meshed with the two pairs of stirring gears 27; the drying structure includes: the drying internal support 30, a plurality of drying plates 31 with the same structure, a plurality of scissor-type support rods 32 with the same structure, two pairs of lifting drivers 33 with the same structure, two pairs of telescopic chains 34 with the same structure, a plurality of electric heating pipes 35 with the same structure and two pairs of electric heating support pipes 36 with the same structure; the drying inner support 30 is installed in the high-temperature drying box 5, the drying plates 31 are uniformly and movably installed in the drying inner support 30, the scissor-type supporting rods 32 are installed on the drying plates 31 in a distributed mode, two pairs of lifting drivers 33 are installed on the drying inner support 30 respectively, two pairs of telescopic chains 34 are installed on driving ends of the two pairs of lifting drivers 33 respectively, the other ends of the two pairs of telescopic chains 34 are connected to the drying plates 31, the electric heating pipes 35 are uniformly installed on the inner side of the high-temperature drying box 5, the two pairs of electric heating supporting pipes 36 are inserted in the drying plates 31 in a pairwise parallel mode, and the ultrasonic vibrators 37 are arranged on the drying plates 31 respectively.

The implementation scheme is characterized by comprising the following operation steps: step S1, crushing waste materials; step S2, stirring and dissolving; step S3, squeezing, dissolving and filtering; step S4, adding carbon dioxide; step S5: drying at high temperature; step S6: ultrasonic separation; step S1: pouring the waste building materials into a crushing device, and crushing and grinding the waste building materials into powder; step S2: pouring the ground waste into a stirring device, and dissolving the ground raw materials in low-temperature water; step S3: adding the dissolved liquid into an extrusion device, and injecting water and low-temperature water into the extrusion device to completely dissolve the hydrated lime; step S4: adding carbon dioxide into the slightly melted slaked lime after filtration; step S5: under the high-temperature condition, CaCO3 can be decomposed into calcium oxide CaO (quicklime) and carbon dioxide CO 2; step S6: vibrating the quicklime into powder by vibration; will be greater than the waste material recirculation of certain size through the screw thread loop structure and grind, through centrifugal vibrations structure, will grind in the cauldron waste material gets rid of screw thread loop structure and stirred tank respectively, generate calcium oxide CaO and carbon dioxide CO2 with CaCo 3's pyrolysis through the stoving structure on the high temperature stoving case, CaCO3 (high temperature) ═ CaO + CO2 ℃. to cyclic utilization quick lime's effect.

All the electrical components in the present application are connected with the power supply adapted to the electrical components through the wires, and an appropriate controller should be selected according to actual conditions to meet the control requirements, and specific connection and control sequences should be obtained.