Rotary kiln for barite calcination in chemical industry

Abstract

The utility model provides a rotary kiln for barite calcination in chemical industry, which is characterized by comprising a support structure, a calcination structure and an auxiliary structure, the calcination structure is arranged above the support structure, the support structure is connected with the calcination structure in a welding manner, the auxiliary structure is arranged on one side of the calcination structure, and the calcination structure is connected with the auxiliary structure in a welding manner. According to the utility model, the calcining structure is improved, harmful substances such as particulate matters, sulfides, nitrogen oxides and the like in flue gas can be effectively removed through the flue gas purification device, so that the environmental protection requirement is met, the pollutant emission is reduced, and meanwhile, the flue gas is purified, so that the coking in the flue can be avoided, the purification efficiency is improved, and the environmental protection requirement is met. And meanwhile, the frequency of manually cleaning the flue is reduced, the stable combustion environment in the rotary kiln can be maintained, and then the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary kiln technical field especially relates to a kind of for calcining of barite in chemical industry rotary kiln. BACKGROUND

[0002] Barite is the important industrial mineral raw material for preparing barium and barium compound, and its main component is barium sulfate. In the chemical industry, it is the basic raw material for manufacturing various barium chemical products, such as barium oxide, barium carbonate, barium chloride, barium nitrate, precipitated barium sulfate, and barium hydroxide. Rotary kiln is a kind of rotary calcining kiln, which is widely used in building materials, metallurgy, chemical industry, environmental protection and other production industries, for mechanical, physical or chemical treatment of solid materials. In the chemical industry, rotary kiln is mainly used for calcining of barite, which is converted into the required industrial product by high-temperature calcination.

[0003] The prior art patent No. CN117588933A discloses a rotary kiln calcining equipment using microwave heating, belonging to the technical field of rotary kiln heating. It includes a feeding system, an air inlet system, a calcining and heating system, and a discharging and cooling system. The calcining and heating system includes a kiln body support unit and a kiln body with several magnetrons on the inner wall. The feeding system and the air inlet system are connected to the inlet of the kiln body. The discharging and cooling system is connected to the outlet of the kiln body. By arranging several magnetrons on the inner wall of the kiln body, microwave heating can be used to heat the materials in the rotary kiln as a whole, shorten the calcining time, and reduce the sintering temperature. By arranging a layer of silicon nitride material on the exposed surface of the firebrick, the uniformity of the sintering chamber temperature distribution is improved, the production energy consumption is reduced, and the product quality is improved. The magnetrons are distributed in each part of the rotary kiln, and the distribution of the magnetrons in the rotary kiln can be designed flexibly according to the calcining requirements, and the power of each magnetron can be adjusted in real time.

[0004] The existing technology has the following problems: the flue gas generated during the calcination process contains a large amount of dust, sulfides, nitrogen oxides and other pollutants, which need to be treated by separate equipment, which is complex and occupies a large area. UTILITY MODEL CONTENT

[0005] In view of the above technical problems, the utility model provides a kind of rotary kiln for calcining barite of chemical industry, it is characterized by including support structure, calcining structure, auxiliary structure, the upper portion of support structure is provided with calcining structure, support structure and calcining structure are connected by welding, the side of calcining structure is provided with auxiliary structure, calcining structure and auxiliary structure are movably connected;The calcining structure is composed of kiln body, feeding end, discharge end, exhaust end, slagging end, flue gas duct, slagging duct, flue gas purifier, material receiving chamber, waste residue recovery chamber, the side of kiln body is provided with feeding end, discharge end, exhaust end, slagging end, the kiln body and feeding end, discharge end, exhaust end, slagging end are connected by welding, the side of exhaust end is provided with flue gas duct, the exhaust end and flue gas duct are connected by flange, the side of flue gas duct is provided with flue gas purifier, the flue gas duct is connected with the gas inlet of flue gas purifier, the side of slagging end is provided with slagging duct, the slagging end and slagging duct are connected by flange, the side of slagging duct is provided with waste residue recovery chamber, the slagging duct is connected with the residue inlet of waste residue recovery chamber, the upper portion of waste residue recovery chamber is provided with material receiving chamber, the waste residue recovery chamber and material receiving chamber are connected by welding, the side of material receiving chamber is connected with material receiving end.Kiln body side is provided with connecting block;Feeding end, discharge end, exhaust end, slagging end are all provided with valve;Discharge end is provided with filter screen, filter screen can be detached and replaced.

[0006] The support structure is composed of base, telescopic rod, support, motor A and offset ring, the upper portion of telescopic rod is provided with support, the telescopic rod and support are connected by welding, the side of support is provided with motor A, the side of motor A is provided with offset ring, and the output end of motor A is connected with offset ring.

[0007] The auxiliary structure is composed of telescopic column, telescopic support, motor B, connecting end, connecting rod, take-up roller and cable chain, the side of telescopic column is provided with telescopic support, the telescopic column and telescopic support are connected by welding, the side of telescopic support is provided with motor B, the telescopic support and motor B are connected by welding, the side of motor B is provided with connecting end, the output end of motor B is connected with connecting end, the upper portion of telescopic column is provided with connecting rod, the telescopic column and connecting rod are connected by welding, the side of connecting rod is provided with take-up roller, the connecting rod and take-up roller are connected by welding, the side of take-up roller is provided with cable chain, the take-up roller and cable chain are connected by welding, and the other end of cable chain is connected on the connecting block of recovery kiln kiln body through detachable ring.

[0008] The utility model has the advantages that:

[0009] The utility model improves the support structure, the support structure of base, telescopic link, support, motor A, offset ring is formed, can adjust the height of kiln body through telescopic link, drives the rotation of offset ring through motor A rotation, thereby can adjust the inclination angle of kiln body, help material to slide smoothly in kiln, avoid material accumulation, ensure the continuity and stability of production process, proper offset and inclination angle can make material evenly distribute in kiln, improve heat transfer efficiency, promote chemical reaction to proceed, thereby improve production efficiency and product quality.

[0010] The utility model improves the calcination structure, the calcination structure of kiln body, feed end, discharge end, exhaust end, slag end, flue gas pipeline, slag pipeline, flue gas purifier, material receiving chamber, waste slag recovery chamber is formed, can remove the particulate matter, sulfide, nitrogen oxides and other harmful substances in flue gas through flue gas purification device, to meet the environmental protection requirement, reduce pollution emission, at the same time, through the purification of flue gas, can avoid the coking in flue, improve the purification efficiency, reduce the frequency of manual cleaning flue simultaneously, help to maintain the stable combustion environment in rotary kiln, and then improve product quality.

[0011] The utility model improves the auxiliary structure, the auxiliary structure of telescopic column, telescopic stand, motor B, connecting end, connecting rod, take-up roller, cable chain is formed, can realize the rotation of kiln body through the rotation of motor B, the rotation of rotary kiln makes material evenly heated in kiln body, improves the calcination efficiency, cable chain suspension support further strengthens the stability of equipment, prevents equipment deformation, guarantees the stability of production, and the design of support structure and cable chain suspension support makes the equipment more convenient when maintaining and overhauling, for example, can more easily access equipment to clean, check and replace parts. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is whole structure schematic view of a kind of rotary kiln for barite calcination of chemical industry of the utility model;

[0013] Figure 2 It is side schematic view of a kind of rotary kiln for barite calcination of chemical industry of the utility model;

[0014] Figure 3 It is side schematic view of a kind of rotary kiln for barite calcination of chemical industry of the utility model;

[0015] Figure 4 It is top schematic view of a kind of rotary kiln for barite calcination of chemical industry of the utility model;

[0016] Figure 5 It is inclination schematic view of a kind of rotary kiln for barite calcination of chemical industry of the utility model;

[0017] Figure 1 is a base; 2 is a telescopic rod; 3 is a support; 4 is an offset ring; 5 is a kiln body; 6 is a feeding end; 7 is a discharging end; 8 is an exhaust end; 9 is a slag discharging end; 10 is a flue gas duct; 11 is a slag discharging duct; 12 is a flue gas purifier; 13 is a material collecting chamber; 14 is a waste slag recycling chamber; 15 is a telescopic column; 16 is a telescopic support; 18 is a connecting end; 19 is a connecting rod; 20 is a take-up roller; 21 is a cable chain. DETAILED DESCRIPTION Example 1

[0018] The utility model provides a kind of for heavy spar calcination of chemical industry rotary kiln, it is characterized in that support structure is composed of base 1, telescopic rod 2, support 3, motor A, offset ring 4, calcination structure is composed of kiln body 5, feeding end 6, discharging end 7, exhaust end 8, slag discharging end 9, flue gas duct 10, slag discharging duct 11, flue gas purifier 12, material collecting chamber 13, waste slag recycling chamber 14, auxiliary structure is composed of telescopic column 15, telescopic support 16, motor B, connecting end 18, connecting rod 19, take-up roller 20, cable chain 21,

[0019] The upper side of telescopic rod 2 is provided with support 3, and telescopic rod 2 is connected with support 3 by welding; one side of support 3 is provided with motor A; one side of motor A is provided with offset ring 4; the output end of motor A is connected with offset ring 4. Kiln body 5 is connected with feeding end 6, discharging end 7, exhaust end 8 and slag discharging end 9 by welding; one side of exhaust end 8 is provided with flue gas duct 10; exhaust end 8 is connected with flue gas duct 10 by flange; one side of flue gas duct 10 is provided with flue gas purifier 12; flue gas duct 10 is connected with the gas inlet of flue gas purifier 12; one side of slag discharging end 9 is provided with slag discharging duct 11; slag discharging end 9 is connected with slag discharging duct 11 by flange; one side of slag discharging duct 11 is provided with waste slag recycling chamber 14; slag discharging duct 11 is connected with the slag inlet of waste slag recycling chamber 14; the upper side of waste slag recycling chamber 14 is provided with material collecting chamber 13; waste slag recycling chamber 14 is connected with material collecting chamber 13 by welding; one side of material collecting chamber 13 is connected with material collecting end. One side of telescopic rod 2 is provided with telescopic support 16; telescopic column 15 is connected with telescopic support 16 by welding; one side of telescopic support 16 is provided with motor B; telescopic support 16 is connected with motor B by welding; one side of motor B is provided with connecting end 18; the output end of motor B is connected with connecting end 18; the upper side of telescopic column 15 is provided with connecting rod 19; telescopic column 15 is connected with connecting rod 19 by welding; one side of connecting rod 19 is provided with take-up roller 20; connecting rod 19 is connected with take-up roller 20 by welding; one side of take-up roller 20 is provided with cable chain 21; take-up roller 20 is connected with cable chain 21 by welding; the other end of cable chain 21 is connected with the connecting block of recycling kiln kiln body 5 by detachable ring. Example 2

[0020] When the utility model is used, the kiln body 5 is moved to a suitable height through the electric telescopic rod 2, the electric take-up roller 20 drives the cable chain 21 to be retracted and released, the kiln body 5 is suspended, and the electric telescopic rod 2 below the kiln body 5 jointly bears the gravity of the kiln body 5, the kiln body 5 inside the offset ring 4 is driven to rotate by the motor A on one side of the support 3, the electric take-up roller 20 drives the cable chain 21 to be retracted and released, and mutual cooperation makes the kiln body 5 tilt at a suitable angle, the barite raw material is added into the kiln body 5 through the feeding end 6, the barite raw material smoothly slides in the kiln, material accumulation is avoided, and the continuity and stability of the production process are ensured, after the barite raw material enters the kiln body 5, the kiln body 5 is reset to the horizontal position, the connecting end 18 on the motor A side of the telescopic frame 16 is connected with the inner cavity of the kiln body 5 through threads and nuts, the inner cavity of the kiln body 5 is driven to rotate, high-temperature calcination treatment is carried out, the material is uniformly heated in the kiln body 5, the barite is converted into the required industrial product, the flue gas generated by high-temperature calcination is discharged through the exhaust end 8, the exhaust end 8 is connected with the flue gas purifier 12 through the flue gas pipeline 10, harmful substances such as particulate matter, sulfide and nitrogen oxide in the flue gas are removed, environmental protection requirements are met, pollution emission is reduced, and a stable combustion environment in the rotary kiln is maintained, the discharge end 7 is connected with the material collecting chamber 13, the generated material after combustion is collected in the material collecting chamber 13, the slag discharge end 9 is connected with the waste slag recycling chamber 14 through the slag discharge pipeline 11, waste slag generated by combustion is discharged, and the waste slag that is not fully combusted is secondarily recycled.

[0021] The basic principles and main features of the present application are shown and described above, and the advantages of the present application are shown and described above. The various components mentioned in the present application are common techniques in the prior art, and those skilled in the art should understand that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln for calcining barite in the chemical industry, characterized in that... The structure includes a supporting structure, a calcining structure, and an auxiliary structure. The calcining structure is positioned above the supporting structure and is connected to it by welding. An auxiliary structure is located on one side of the calcining structure, and the calcining structure is movably connected to the auxiliary structure. The calcining structure comprises a kiln body, a feed end, a discharge end, an exhaust end, a slag discharge end, a flue gas duct, a slag discharge duct, a flue gas purifier, a receiving chamber, and a waste residue recovery chamber. The feed end, discharge end, exhaust end, and slag discharge end are located on the side of the kiln body, and the kiln body is connected to these ends by welding. The exhaust end is connected to the flue gas purifier via a flange. A slag discharge pipe is located on one side of the exhaust end, and the exhaust end is connected to the flue gas purifier via a flange. A slag recovery chamber is located on one side of the slag discharge pipe, and the slag discharge pipe is connected to the slag inlet of the slag recovery chamber. A receiving chamber is located above the slag recovery chamber, and the slag recovery chamber and the receiving chamber are connected by welding. A receiving end is connected to one side of the receiving chamber.

2. The rotary kiln for barite calcination in the chemical industry according to claim 1, characterized in that, The support structure consists of a base, a telescopic rod, a bracket, a motor A, and an offset ring. A bracket is installed above the telescopic rod, and the telescopic rod and the bracket are connected by welding. A motor A is installed on one side of the bracket, and an offset ring is installed on one side of the motor A. The output end of the motor A is connected to the offset ring.

3. A rotary kiln for barite calcination in the chemical industry according to claim 1, characterized in that, The auxiliary structure consists of a telescopic column, a telescopic frame, a motor B, a connecting end, a connecting rod, a take-up roller, and a chain. A telescopic frame is installed on one side of the telescopic column, and the telescopic column and the telescopic frame are connected by welding. Motor B is installed on one side of the telescopic frame, and the telescopic frame and motor B are connected by welding. A connecting end is installed on one side of the motor B, and the output end of the motor B is connected to the connecting end. A connecting rod is installed above the telescopic column, and the telescopic column and the connecting rod are connected by welding. A take-up roller is installed on one side of the connecting rod, and the connecting rod and the take-up roller are connected by welding. A chain is installed on one side of the take-up roller, and the take-up roller and the chain are connected by welding. The other end of the chain is connected to the connecting block of the recovery kiln body via a detachable ring.

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