Roasting device for quartz sand production
By employing horizontally arranged roasting tanks and high-pressure inert gas tumbling technology in the quartz sand roasting device, the problems of uneven heating and incomplete waste gas treatment during the quartz sand roasting process have been solved, achieving efficient and environmentally friendly quartz sand production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-03-31
AI Technical Summary
The existing quartz sand roasting process suffers from problems such as high energy consumption, inaccurate temperature control, uneven heating, and incomplete waste gas treatment, which affect production efficiency and the environment.
The horizontally set roasting tank, combined with heating components, high-pressure air inlet components and discharge components, uses high-pressure inert gas to tumble the quartz sand to ensure uniform heating and waste gas separation, and utilizes temperature sensors and safety valves to ensure process stability.
This method achieves uniform heating of quartz sand, improves production efficiency and calcination quality, reduces energy consumption, ensures environmental protection, and enhances production capacity and safety.
Smart Images
Figure CN224065900U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of quartz sand baking equipment, and in particular to a calcination device for quartz sand production. Background Technology
[0002] Quartz sand contains a certain amount of moisture or organic matter. In some applications requiring drying and high-temperature treatment, excessive moisture can negatively impact processing results. High-temperature calcination effectively removes organic matter and reduces moisture content, while temperature control further improves the chemical purity of the quartz sand. Through calcination, impurities are removed via volatilization, resulting in high-purity quartz sand.
[0003] In conventional operations, the roasting process requires a high-temperature environment, which typically requires a large amount of energy (such as electricity, natural gas, coal, etc.). Excessive energy consumption leads to increased production costs and affects overall economic efficiency.
[0004] The inability to precisely control the calcination temperature, resulting in calcination that is too high or too low, affects the calcination quality of the quartz sand and may even lead to sintering or damage of the quartz sand.
[0005] The calcination process of quartz sand usually involves high-temperature treatment of the material. If the material is not evenly distributed in the calcination device, some parts of the quartz sand may be underheated or overheated, affecting the quality of the final product.
[0006] The roasting process generates a certain amount of waste gas and dust. Without effective treatment measures, these pollutants may have an impact on the environment, especially the emissions of gases such as sulfur dioxide (SO2) and nitrogen oxides (NOx). Summary of the Invention
[0007] The technical problem to be solved by this utility model is to provide a calcination device for quartz sand production that optimizes the temperature distribution inside the furnace, effectively controls the calcination temperature, and effectively treats the waste gas generated by the reaction, in order to address the shortcomings of the existing technology.
[0008] The technical problem to be solved by this utility model is achieved through the following technical solution: a calcining device for quartz sand production, comprising a horizontally arranged calcining tank, a heating component independently and nested with the calcining tank along its axis, a feed inlet at the upper part of one end of the tank body, a feed hopper at the feed inlet, a filter screen inside the feed hopper, a discharge outlet at the bottom of the tank body at the other end of the calcining tank, a slope at the bottom wall of the calcining tank body sloping downwards from the feed inlet to the discharge outlet, a high-pressure air intake component on one side of the top of the slope, the high-pressure air intake component conveying high-pressure inert gas into the calcining tank, blowing and tumbling the quartz sand in the calcining tank and driving the continuously baked quartz sand from the feed inlet to the discharge outlet, the high-pressure inert gas entering the calcining tank effectively blowing and tumbling the quartz sand. To avoid localized overheating or uneven heating, the quartz sand undergoes uniform heating and treatment during the roasting process, ensuring that the surface of each quartz sand grain is fully in contact with the high-temperature airflow, thus improving roasting efficiency and effectiveness. Simultaneously, it effectively guides the liquid quartz sand from the inlet to the outlet, preventing stagnation or accumulation within the tank. The uniform heating and excellent tumbling effect of the quartz sand allow the device to process larger quantities, significantly increasing production capacity while maintaining roasting quality. The lower end of the slope connects seamlessly to the outlet, where a discharge assembly enables automatic quartz sand discharge. An exhaust assembly on the upper part of the roasting tank on one side of the outlet effectively and efficiently removes waste gases generated during the roasting process, maintaining a stable roasting environment and ensuring efficient separation of waste gases from the quartz sand.
[0009] As a further embodiment of this utility model, the heating assembly includes a roasting inner liner, with mounting shafts at both ends of the roasting inner liner and mounting outer rings at the mounting shafts. The mounting outer rings are sealed to the end caps on both sides of the roasting horizontal tank. One end of the roasting inner liner is designated as an inlet end, and a heater is installed inside the mounting shaft at the inlet end. The inner extension length of the heater accounts for 1 / 5 to 1 / 4 of the total length of the roasting inner liner. The heaters are reasonably distributed in the roasting inner liner, allowing the high-temperature gas to flow and conduct more evenly, resulting in a uniform temperature distribution on the outer wall of the entire roasting inner liner.
[0010] The other end of the calcining liner is designated as the outlet end, which has an exhaust channel for discharging the high-temperature gases from the calcining liner. An exhaust flange is located at the end of the exhaust channel. The exhaust channel effectively discharges the high-temperature gases generated during heating. The gases carry a significant amount of heat during their flow, transferring this heat energy to the surface of the calcining liner. The outer ring is sealed to the end caps on both sides of the horizontal calcining tank, creating a sealed space between the outer wall of the calcining liner and the horizontal calcining tank. This sealed space effectively prevents heat and gas leakage, maintaining a stable reaction environment for the melting of the quartz sand.
[0011] As a further embodiment of this invention, the high-pressure air intake assembly includes a compressor with a high-pressure air intake pipeline. An air inlet is located on the end cover of the roasting horizontal tank on one side of the landslide top. The high-pressure air intake pipeline is connected to the air inlet and is equipped with an air intake valve. The air intake valve precisely controls the gas flow rate and pressure entering the roasting horizontal tank, adjusting the gas input according to actual needs to optimize key parameters such as temperature and gas flow during the roasting process, thereby improving the stability and controllability of the overall roasting process. The high-pressure airflow blows the quartz sand into a floating turbulent state, allowing the quartz sand to undergo sufficient heat exchange and melt.
[0012] As a further embodiment of this utility model, the discharge assembly includes a discharge pipe and a discharge flange. The discharge pipe extends downward along the slope at an incline. The discharge flange is paired with a connecting flange. The discharge pipe is connected to a discharge pipe through the flange. The discharge pipe is equipped with a discharge valve.
[0013] The discharge pipe extends downwards along the slope, which helps the material flow more smoothly under gravity, thus improving discharge efficiency. A discharge valve is installed on the discharge pipe, allowing for flexible control of the discharge flow rate and speed. The discharge valve can be precisely adjusted as needed to regulate the amount of material discharged.
[0014] As a further embodiment of this invention, the gas outlet assembly includes a gas outlet pipeline, on which a gas outlet valve, a filter, and a one-way valve are sequentially arranged. A gas collection system is connected to the end of the gas outlet pipeline. The exhaust gas is collected by the gas collection system, preventing harmful gases generated during the roasting process from affecting the environment and operators, while ensuring the product's environmental protection requirements.
[0015] As a further embodiment of this invention, the top of the roasting horizontal tank is equipped with a safety valve and an emergency discharge valve, and an internal temperature sensor is installed on the end cap on the discharge port side of the roasting horizontal tank. The safety valve can effectively prevent accidents caused by excessive internal pressure during the operation of the roasting horizontal tank. When the pressure inside the tank exceeds the set value, the safety valve will automatically open to release the excessive pressure and protect the equipment from damage.
[0016] Emergency discharge valves quickly release pressure or materials in case of emergencies, avoiding greater risks caused by equipment failure or abnormal conditions and ensuring safety during the production process.
[0017] An internal temperature sensor is installed on the end cap of the discharge port of the roasting horizontal tank to monitor the temperature in real time during the roasting process. The temperature sensor can directly contact the roasting material, ensuring the accuracy of temperature measurement and providing precise data support for the temperature control system.
[0018] As a further embodiment of this utility model, two saddle supports are symmetrically arranged along the length direction below the roasting horizontal tank. The saddle supports include a reinforcing plate wrapped around the lower part of the roasting horizontal tank, a support plate is provided below the reinforcing plate, a bottom plate is provided at the bottom of the support plate, and anchor bolt holes are provided on the bottom plate.
[0019] Two saddle-type supports are symmetrically arranged along the length direction to evenly distribute the weight of the roasting tank, making the roasting tank stable and less prone to tilting during operation. The symmetrical support structure effectively reduces equipment swaying caused by uneven weight distribution or improper support, thus improving the stability of the equipment.
[0020] The reinforcing plate wrapped around the bottom of the roasting pan effectively increases the load-bearing capacity of the support. The function of the reinforcing plate is to distribute the weight and stress points of the roasting pan, avoiding damage or deformation that may be caused by concentrated pressure at a single point.
[0021] The beneficial effects of this utility model are as follows: This utility model provides a calcination device for quartz sand production, including a horizontally arranged calcination tank. The calcination tank is provided with a heating component that is independent of and fitted together with the calcination tank along its axis. A feed inlet is provided at the upper part of the tank body at one end of the calcination tank, and a feed hopper is provided at the feed inlet. A filter screen is provided in the feed hopper. A discharge outlet is provided at the bottom of the tank body at the other end of the calcination tank. The bottom wall of the calcination tank body is inclined downward from the feed inlet to the discharge outlet and has a slope. A high-pressure air intake component is provided on one side of the top of the slope. The high-pressure air intake component delivers high-pressure inert gas into the calcination tank, which blows and tumbles the quartz sand in the calcination tank and drives the continuously baked quartz sand from the feed inlet to the discharge outlet. The high-pressure inert gas effectively blows and tumbles the quartz sand into the calcination tank. To avoid localized overheating or uneven heating, the quartz sand undergoes uniform heating and treatment during the roasting process, ensuring that the surface of each quartz sand grain is fully in contact with the high-temperature airflow, thus improving roasting efficiency and effectiveness. Simultaneously, it effectively guides the liquid quartz sand from the inlet to the outlet, preventing stagnation or accumulation within the tank. The uniform heating and excellent tumbling effect of the quartz sand allow the device to process larger quantities, significantly increasing production capacity while maintaining roasting quality. The lower end of the slope connects seamlessly to the outlet, where a discharge assembly enables automatic quartz sand discharge. This assembly includes a discharge pipe and a discharge flange. The discharge pipe extends downwards along the slope, facilitating smoother material flow under gravity and improving discharge efficiency. A discharge valve on the discharge pipe allows for flexible control of the discharge flow rate and speed, enabling precise adjustment of the valve to regulate the amount of material discharged as needed.
[0022] The upper part of the roasting horizontal tank on the discharge port side is equipped with an exhaust component to effectively and efficiently remove the waste gas generated during the roasting process, maintain the stability of the roasting environment, and efficiently separate the waste gas from the quartz sand.
[0023] The exhaust pipe of the exhaust assembly is connected to a gas collection system. The exhaust gas is collected by the gas collection system to prevent harmful gases generated during the roasting process from affecting the environment and operators, while ensuring the environmental protection requirements of the product.
[0024] The safety valve effectively prevents accidents caused by excessive internal pressure in the roasting tank during operation. When the pressure inside the tank exceeds the set value, the safety valve will automatically open to release the excessive pressure and protect the equipment from damage.
[0025] Emergency discharge valves quickly release pressure or materials in case of emergencies, avoiding greater risks caused by equipment failure or abnormal conditions and ensuring safety during the production process.
[0026] An internal temperature sensor is installed on the end cap of the discharge port of the roasting horizontal tank to monitor the temperature in real time during the roasting process. The temperature sensor can directly contact the roasting material, ensuring the accuracy of temperature measurement and providing precise data support for the temperature control system. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0028] Figure 2 This is a schematic diagram of the air outlet component structure of this utility model.
[0029] Wherein: 1-High-pressure intake assembly, 101-Compressor, 1002-High-pressure intake pipeline, 121-Intake valve,
[0030] 2-Heating component, 201-Air outlet channel, 211-Air outlet flange, 202-Mounting outer ring, 203-Mounting shaft head, 204-Heater, 205-Roasting inner liner, 3-Feed hopper, 301-Filter screen, 4-Roasting horizontal tank, 401-Feed inlet, 402-Slide ramp, 403-Discharge outlet, 5-Safety valve, 6-Emergency discharge valve, 7-Air outlet component, 701-Air outlet pipeline, 711-Air outlet valve, 712-Filter, 713-Check valve, 8-Discharge component, 801-Discharge pipe, 802-Discharge flange, 803-Discharge pipe, 831-Discharge valve, 9-Saddle support, 10-Internal extension temperature sensor, 11-Gas collection system. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0032] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0034] like Figures 1 to 2 As shown, a calcining device for quartz sand production includes a horizontally arranged calcining tank 4. Two saddle supports 9 are symmetrically arranged along the length of the calcining tank below it. Each saddle support includes a reinforcing plate wrapped around the lower part of the calcining tank, a support plate below the reinforcing plate, and a bottom plate with anchor bolt holes at the bottom of the support plate. The reinforcing plate is wrapped around the lower part of the calcining tank and welded circumferentially to the lower part of the calcining tank by fillet welding. The symmetrical arrangement of the two saddle supports along the length evenly distributes the weight of the calcining tank, increasing the load-bearing capacity of the supports. The function of the reinforcing plate is to distribute the weight and stress points of the calcining tank, avoiding damage or deformation that may be caused by concentrated pressure at a single point.
[0035] A heating assembly 2, independent of and fitted together with the roasting horizontal tank, is provided along the axis of the roasting horizontal tank. The heating assembly includes a roasting inner liner 205, with mounting shafts 203 at both ends of the roasting inner liner. An outer mounting ring 202 is provided at each mounting shaft, and the outer mounting ring is sealed to the end caps on both sides of the roasting horizontal tank. One end of the roasting inner liner is designated as an inlet end, and a heater 204, which is an electric heater, is located inside the mounting shaft at the inlet end. The inner extension length of the heater accounts for 1 / 5 of the total length of the roasting inner liner.
[0036] When in use, heater 204 is activated, and the heater heats the inner liner 205, causing the temperature to rise continuously. The temperature of the outer wall of the inner liner also rises continuously.
[0037] The other end of the baking liner 205 is designated as the outlet end, which is equipped with an exhaust channel 201 for discharging high-temperature gases from the baking liner. An exhaust flange 211 is provided at the end of the exhaust channel. The exhaust channel effectively discharges the high-temperature gases generated during the heating process. The gases carry a large amount of heat during their flow, transferring thermal energy to the surface of the baking liner.
[0038] The outer ring is installed and sealed to the end caps on both sides of the roasting horizontal tank, forming a sealed space between the outer wall of the roasting inner liner 205 and the roasting horizontal tank 4. This sealed space effectively prevents the leakage of heat and gas, maintaining a stable reaction environment for the quartz sand to melt when heated.
[0039] The upper part of the calcining horizontal tank is provided with a feed inlet 401, and a feed hopper 3 is provided at the feed inlet. A filter screen 301 is provided in the feed hopper. Quartz sand is added along the feed hopper, filtered by the filter screen 301, and falls into the calcining horizontal tank.
[0040] After falling, the quartz sand lands directly on the calcining inner liner 205. Some of the quartz sand comes into direct contact with the calcining inner liner and is calcined and melted. The other part of the quartz sand slides down along the edge of the calcining inner liner and, after falling, mixes with the high-temperature airflow to exchange heat. The quartz sand continuously melts and forms a liquid state.
[0041] A discharge port 403 is provided at the bottom of the other end of the roasting horizontal tank. The bottom wall of the roasting horizontal tank slopes downwards from the inlet to the outlet, forming a ramp 402. A high-pressure air intake assembly is provided on one side of the ramp top. The high-pressure air intake assembly includes a compressor 101, which is equipped with a high-pressure air intake pipe 102. An air inlet is provided on the end cover of the roasting horizontal tank on one side of the ramp top. The high-pressure air intake pipe 102 is connected to the air inlet and is equipped with an air intake valve 121. The air intake valve precisely controls the gas flow rate and pressure entering the roasting horizontal tank, adjusting the gas input according to actual needs, optimizing key parameters such as temperature and gas flow during the roasting process, and improving the stability and controllability of the overall roasting process. The high-pressure airflow blows the quartz sand into a floating turbulent state, allowing the quartz sand to undergo sufficient heat exchange and melt.
[0042] The high-pressure air intake assembly 1 delivers high-pressure inert gas into the roasting horizontal tank, agitating and tumbling the quartz sand within. This propels the continuously roasted quartz sand from the inlet 401 towards the outlet 403. The high-pressure inert gas effectively agitates and tumbles the quartz sand, preventing localized overheating or uneven heating. This ensures the quartz sand receives uniform heating and processing during roasting, guaranteeing that the surface of each grain of quartz sand is fully in contact with the high-temperature airflow, resulting in thorough roasting.
[0043] At the same time, it effectively guides the liquid quartz sand to flow from the inlet to the outlet, preventing the quartz sand from stagnating or accumulating in the tank. The uniform heating and good tumbling effect of the quartz sand allow for the processing of a larger quantity of quartz sand, greatly improving production capacity while ensuring the quality of roasting.
[0044] The lower end of the landslide is connected to the discharge port. The discharge port is equipped with a discharge assembly 8, which includes a discharge pipe 801 and a discharge flange 802. The discharge pipe extends downward along the landslide at an incline. The discharge flange 802 is paired with a connecting flange. The discharge pipe is connected to a discharge pipe 803 through the flange. The discharge pipe is equipped with a discharge valve 831.
[0045] The discharge pipe extends downwards along the slope, which helps the material flow more smoothly under the action of gravity. When the discharge begins, the discharge valve 831 is opened, and the discharge valve is precisely adjusted to control the flow rate and speed of the discharge, thereby regulating the amount of material discharged.
[0046] A gas venting assembly 7 is provided on the upper part of the horizontal roasting tank on one side of the discharge port. The gas venting assembly includes a gas venting pipe 701, a gas venting valve 711, a filter 712, and a one-way valve 713 arranged sequentially on the gas venting pipe. A gas collection system 11 is connected to the end of the gas venting pipe. During the quartz sand roasting process, waste gas is continuously generated. In order to separate the waste gas from the quartz sand in a timely manner, the gas venting valve and the one-way valve are opened, and the waste gas is discharged along the gas venting pipe and collected by the gas collection system.
[0047] The top of the roasting horizontal tank is equipped with a safety valve 5 and an emergency release valve 6. During the roasting process, the safety valve 5 can effectively prevent accidents caused by excessive internal pressure in the roasting horizontal tank. When the pressure inside the tank exceeds the set value, the safety valve automatically opens to release the excessive pressure and protect the equipment from damage.
[0048] Emergency discharge valve 6 can quickly release pressure or materials in case of emergencies, avoiding greater risks caused by equipment failure or abnormal conditions and ensuring safety in the production process.
[0049] An internal temperature sensor 10 is installed on the end cap on one side of the discharge port of the horizontal roasting tank. The internal temperature sensor 10 directly contacts the roasting material and monitors the temperature in real time during the roasting process, providing accurate data support for the temperature control system. The roasting temperature of quartz sand generally reaches 1000℃-1500℃.
[0050] When the temperature is too high, lower the heating temperature of heater 204; when the measured temperature is too low, raise the heating temperature of heater 204. Adjust the heating temperature of the calcining liner in a timely manner according to actual needs to maintain the calcination temperature of the quartz sand.
[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A calcining apparatus for quartz sand production, characterized in that, The application relates to a roasting horizontal tank (4) arranged horizontally, which is provided with a heating assembly (2) arranged independently and sleeved with the roasting horizontal tank along an axis, a feeding port (401) is arranged at the upper part of the tank body at one end of the roasting horizontal tank, a feeding hopper (3) is arranged at the feeding port, a filter screen (301) is arranged in the feeding hopper, a discharging port (403) is arranged at the bottom of the tank body at the other end of the roasting horizontal tank, a slide (402) is arranged on the bottom wall of the tank body of the roasting horizontal tank and is inclined downward from the feeding port to the discharging port, a high-pressure air inlet assembly (1) is arranged at one side of the top end of the slide, the high-pressure air inlet assembly is used for conveying high-pressure inert gas into the roasting horizontal tank, the high-pressure inert gas is used for blowing and rolling the quartz sand in the roasting horizontal tank and driving the continuously roasted quartz sand from the feeding port to the discharging port, the low end of the slide is connected with the discharging port in transition, a discharging assembly (8) is arranged at the discharging port, and an air outlet assembly (7) is arranged at the upper part of the roasting horizontal tank at one side of the discharging port.
2. The calcining device for producing quartz sand according to claim 1, characterized by The heating assembly (2) comprises a roasting inner container (205), mounting shaft heads (203) are arranged at two ends of the roasting inner container, mounting outer rings (202) are arranged at the mounting shaft heads, the mounting outer rings are sealingly arranged with both side end covers of the roasting horizontal tank, one end of the roasting inner container is arranged as an inlet end, a heater (204) is arranged in the mounting shaft head at the inlet end, the length of the heater extending into the roasting inner container accounts for 1 / 5-1 / 4 of the total length of the roasting inner container; the other end of the roasting inner container is arranged as an outlet end, an air outlet channel (201) for discharging high-temperature gas in the roasting inner container is arranged at the outlet end, and an air outlet flange (211) is arranged at the end of the air outlet channel.
3. The calcining device for producing quartz sand according to claim 1, characterized by The high-pressure air inlet assembly (1) comprises a compressor (101), a high-pressure air inlet pipeline (102) is arranged on the compressor, an air inlet is arranged on the end cover of the roasting horizontal tank at one side of the top end of the slide, the high-pressure air inlet pipeline (102) is connected with the air inlet, and an air inlet valve (121) is arranged on the high-pressure air inlet pipeline.
4. The calcining device for producing quartz sand according to claim 2, characterized by The discharging assembly (8) comprises a discharging pipe (801) and a discharging flange (802), the discharging pipe extends downwardly along the slide, the discharging flange is arranged in pairs and is provided with a coupling flange, a discharging pipe (803) is arranged on the discharging pipe through flange coupling, and a discharging valve (831) is arranged on the discharging pipe.
5. The calcining apparatus for producing quartz sand according to claim 1, characterized by The air outlet assembly (7) comprises an air outlet pipeline (701), an air outlet valve (711), a filter (712) and a one-way valve (713) are sequentially arranged on the air outlet pipeline, and a gas collection system (11) is connected with the end of the air outlet pipeline.
6. The calcining apparatus for producing quartz sand according to claim 1, characterized by A safety valve (5) and an emergency discharge valve (6) are arranged at the top of the roasting horizontal tank, and an in-extending temperature sensor (10) is arranged on the end cover at one side of the discharging port of the roasting horizontal tank.
7. The calcining apparatus for producing quartz sand according to claim 1, characterized by Two saddle type supports (9) are arranged below the roasting horizontal tank and are symmetrical along the length direction, the saddle type support comprises a reinforcing plate wrapped around the lower part of the roasting horizontal tank, a support plate is arranged below the reinforcing plate, a bottom plate is arranged at the bottom of the support plate, and foundation bolt holes are arranged on the bottom plate.