Basalt tank furnace system with hydrogen as main fuel and melting method

Abstract

The invention provides a basalt tank furnace system with hydrogen as a main fuel and a melting method, and the system comprises a furnace body, a control system, a flue port, a feeding device, basalt ore and melt, an auxiliary electric melting assembly, a combustion device, a sensor, a discharge port, a baffle brick, a collection box, a melting area, a clarification, precipitation and homogenization area and a cooling temperature regulation area, wherein the combustion device comprises a fuel conveying system, a combustion system, a basalt fiber tank furnace and a control system, the fuel conveying system comprises a hydrogen gas conveying pipeline and a natural gas conveying pipeline, and gas outlet ends of the hydrogen gas conveying pipeline and the natural gas conveying pipeline are connected with a gas mixing pipeline. After mixing, the gas outlet ends of the gas mixing pipeline and the oxygen pipeline are connected with the combustion system, all the gas pipelines control the ventilation flow through the flow control valve, and by means of the system and the melting method, carbon emission in the basalt material production process can be effectively reduced; and meanwhile, substances such as iron in the basalt melt can be reduced and precipitated, so that the formability of the basalt melt is improved, and the corrosion of the basalt melt to subsequent process equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the field of basalt melting pool kiln systems and methods, and in particular to a basalt pool kiln system and melting method using hydrogen as the main fuel. The system is applicable to various types of basalt ores and basalt ingredients (such as adding silicate minerals and oxides), in particular basalt ores with high iron content. The system can be widely used in the production of materials such as continuous basalt fibers, rock wool, and basalt flakes. Background Art

[0002] Basalt is one of the most widely distributed and largest basic volcanic eruptive rocks in my country. At present, basalt ore is mainly used in the transportation and construction industries, such as road paving and concrete aggregates. These industries usually use basalt ore crushed stone directly, with large demand but low product added value. After the basalt ore is melted at high temperature, the melt is pulled into fibers to prepare continuous basalt fibers, which have excellent mechanical properties as well as special properties such as insulation, corrosion resistance, good thermal stability, and high and low temperature resistance. In addition, basalt melt can also be used to prepare materials such as rock wool and basalt flakes. Making basalt ore into the above products can effectively increase its economic added value and contribute to the high-value utilization of basalt ore.

[0003] At present, in the production of basalt fiber or other materials mentioned above, the kilns used to melt basalt ore are mainly crucible furnaces and pool kilns. Crucible furnaces are a type of kiln that was widely used in the early days. They use the flame generated by top burning combined with electric auxiliary heating to heat the raw materials. The flame irradiation area is small, the thermal efficiency is relatively low, and the energy consumption is high. At the same time, it can only supply melt to one leak plate, and the production efficiency is relatively low. The raw materials of the pool kiln method can be continuously fed from one end of the pool kiln, and the minerals are heated and melted by multiple flame spray guns or heating electrodes to form a molten pool. This method can supply melt to multiple leak plates at the same time, with high production efficiency and relatively low energy consumption. However, the pool kiln method currently uses flame heating to heat the raw materials, and usually chooses natural gas as fuel, which will cause large carbon emissions. For the full battery kiln, it consumes a lot of electricity, has a high cost, and has strict requirements on power supply. Hydrogen energy is a green and pollution-free clean energy, and also has the advantage of high energy density. Using hydrogen as the fuel for the pool kiln heating device can greatly reduce carbon emissions in the basalt melting process and reduce the consumption of fossil energy. However, the presence of hydrogen may cause the precipitation of elements such as Fe in basalt ore and melt. If the precipitated substances cannot be removed, the performance of the fiber produced in the subsequent production will be weakened, and there will also be serious corrosion to the leaky plate. In addition, alkaline vapor will be produced when hydrogen burns, and the atmosphere must be strictly controlled.

[0004] Therefore, in order to solve the above problems, it is necessary to provide a basalt pool kiln system and a melting method using hydrogen as the main fuel. Summary of the invention

[0005] The purpose of the present invention is to provide a basalt pool kiln system and a melting method using hydrogen as the main fuel. The system is composed of: a kiln body, a control system, a flue port, a feeding device, basalt ore and melt, an auxiliary electric melting component, a combustion device, a sensor, a discharge port, a retaining brick, a collecting box, a melting zone, a clarification precipitation homogenization zone and a cooling and temperature adjustment zone. The combustion device includes a fuel delivery system, a combustion system, a basalt fiber pool kiln and a control system. The fuel delivery system first includes hydrogen and natural gas transmission pipelines, and the gas outlet ends of the two are connected to the mixing pipeline. After mixing, the gas outlet of the mixed gas pipeline and the oxygen pipeline is connected to the combustion system. The combustion system mainly includes a combustion gun arranged on the inner wall of the basalt fiber kiln body, which is used to ignite the fuel input by the fuel delivery system to heat the basalt fiber kiln body. An electric heating auxiliary device is also provided. All gas pipelines control the ventilation flow through a flow control valve. The basalt fiber kiln body is made of refractory materials and is provided with a thermal insulation layer on the outside. At the same time, a temperature sensor and a gas sensor are provided in the kiln body and connected to other systems through a controller to monitor the temperature and control the gas pipeline flow control valve to regulate the temperature and atmosphere. In addition, a sedimentation chamber is provided at the bottom of the kiln clarification area to precipitate the reduced substances, and a valve that can be opened downward is provided at the bottom to clean the precipitated substances. The melt flows out through the discharge port and can be used to support subsequent related forming processes, such as the production of basalt fiber, basalt flakes, rock wool and other products. The design proposed by the present invention can effectively reduce carbon emissions in the production process of basalt materials, and at the same time, can reduce and precipitate substances such as iron in the basalt melt, improve the formability of the basalt melt and reduce its corrosiveness to subsequent process equipment. The system can solve the problems of high carbon emissions and low combustion efficiency in the production process of basalt fiber, and can effectively control the atmosphere and melt temperature in the kiln by accurately controlling the combustion gas ratio. At the same time, it solves the problem of excessive iron content in the basalt melt and the influence of precipitates on melt fiberization and fiber strength.

[0006] The present invention discloses a basalt tank kiln system using hydrogen as main fuel. The system comprises: a kiln body (1), a control system (2), a flue port (3), a feeding device (4), a melt (5), an auxiliary electric melting assembly (6), a combustion device (7), a sensor (8), a discharge port (9), a retaining brick (10), a collecting box (11), a melting zone (12), a clarifying precipitation homogenizing zone (13), a cooling temperature regulating zone (14), a movable kiln body (15) and a valve (16). The kiln body (1) is provided with a melting zone (12), a clarifying precipitation homogenizing zone (13) and a cooling temperature regulating zone (14). A feeding device (4) is provided at one end of the melting zone (12), a discharge port (9) is provided at one end of the cooling temperature regulating zone (14), a flue port (3) is provided on one side of the kiln body (1), a plurality of sensors (8) are provided on the upper part of the kiln body (1), and a plurality of valves (16) are provided. A combustion device (7) is provided with a baffle brick (10) between a melting zone (12), a clarifying precipitation homogenization zone (13) and a cooling temperature adjustment zone (14) in a kiln body (1); a plurality of collecting boxes (11) are provided at the bottom of the kiln body (1); a valve (16) is provided at the bottom of the collecting boxes; a movable kiln body (15) is provided at the bottom of the kiln body (1); a plurality of auxiliary electric melting components (6) are provided at the bottom of the pool wall and are electrically connected to a control system (2) through a transformer (6-1); a discharge port (9) is provided at one side of the lower part of the kiln body (1); the control system (2) is electrically connected to the kiln body (1), a feeding device (4), a sensor (8) and a combustion device (7) respectively, and controls the feeding device (4), the auxiliary electric melting components (6) and the combustion device (7) according to the returned electrical signal to realize the control of the temperature of the melt (5) and the production efficiency; and a heat insulation layer is provided on the outer side of the kiln body (1).

[0007] The combustion device (7) is composed of a fuel delivery system and a combustion system. The fuel delivery system includes a hydrogen gas delivery pipeline (7-1), a natural gas gas delivery pipeline (7-2), an oxygen delivery pipeline (7-3), a primary gas mixing system (8-2) and a secondary gas mixing system (8-3); the input ends of the hydrogen gas delivery pipeline (7-1), the natural gas gas delivery pipeline (7-2) and the oxygen delivery pipeline (7-3) are connected to a gas delivery source; the output ends of the hydrogen gas delivery pipeline (7-1) and the natural gas gas delivery pipeline (7-2) are connected to the input end of the primary gas mixing system (8-2), and the output ends of the primary gas mixing system (8-2) and the oxygen delivery pipeline (7-3) are connected to the input end of the secondary gas mixing system (8-3); the secondary gas mixing system ( The output end of the check valve (8-3) is connected to the input end of the check valve (8-4); the output end of the check valve (8-4) is connected to the flame gun (8-6), and the basalt ore and the melt (5) are heated by the flame of the combustion gas; a filtering device (7-4), a primary pressure transmitter (7-5), a regulator (7-6), a secondary pressure transmitter (7-7), a check valve (7-8), a gas valve (7-9), a flame retardant valve (8-0), a flow control valve (8-1) and a gas leakage sensor (8-5) are sequentially arranged between the input ends of the hydrogen gas transmission pipeline (7-1), the natural gas gas transmission pipeline (7-2), and the oxygen transmission pipeline (7-3) to the primary gas mixing system (8-2) and the input end of the secondary gas mixing system (8-3).

[0008] The melting method of the basalt fiber tank kiln system using hydrogen as the main fuel is carried out according to the following steps:

[0009] The system is composed of: a kiln body (1), a control system (2), a flue port (3), a feeding device (4), a melt (5), an auxiliary electric melting component (6), a combustion device (7), a sensor (8), a discharge port (9), a retaining brick (10), a collecting box (11), a valve (16), a melting zone (12), a clarification, precipitation and homogenization zone (13), a cooling and temperature adjustment zone (14), a movable kiln body (15) and a valve (16);

[0010] a. The raw material of the melt (5) is basalt ore powder, basalt ore with a high iron content or basalt ore with a high silicon content, and is transported to the melting zone (12) in the kiln body (1) through the feeding device (4); hydrogen / oxygen / natural gas is ignited through the combustion device (7), and the melt (5) is heated by heat radiation transfer of the flame;

[0011] b. The melted material (5) flows in the kiln body (1), the temperature and the atmosphere in the kiln (1) are monitored by the sensor (8), and the feeding speed and the flow rate of the combustion gas are regulated by the control system (2);

[0012] c. Under the reducing effect of hydrogen, the Fe metal element in the melt (5) is precipitated and deposited at the bottom of the collecting box (11). When too much deposition occurs, the feeding is stopped. After the liquid level of the melt (5) is lower than the wall of the collecting box (11), the movable kiln body (15) below is removed, and the bottom valve (16) is opened to discharge the precipitated material and the melt in the collecting box (11);

[0013] d. The melt (5) flows into the cooling and temperature adjustment zone (14) through the clarification, precipitation and homogenization zone (13), and then flows out through the discharge port (9).

[0014] The present invention provides a basalt tank kiln system using hydrogen as main fuel, comprising:

[0015] A kiln body (1) and a movable kiln body (15) are constructed by using refractory materials. A melting zone (12), a clarifying, settling and homogenizing zone (13) and a cooling and temperature-adjusting zone (14) (including a passage) are provided inside the kiln body (1). A feeding device (4) is provided at one end of the melting zone (12) of the kiln body (1), and a discharge port (9) is provided at one end of the cooling and temperature-adjusting zone (14) of the kiln body (1). A flue port (3) and a sensor (8) are provided on the kiln body (1). The melting zone (12) and the clarifying, settling and homogenizing zone (13) inside the kiln body (1) are provided with at least one combustion device (7) for burning hydrogen or oxygen to heat the melt (5). A control system (2) is electrically connected to the kiln body (1), the feeding device (4), the sensor (8) and the combustion device (7) respectively, and is used to control the feeding device (4), the auxiliary electric melting component (6) and the combustion device (7) according to the returned electrical signal, so as to finally realize the control of the temperature of the melt (5) and the production efficiency.

[0016] The refractory materials of the kiln body (1) and the movable kiln body (15) are one or more of silica bricks, clay bricks, high alumina bricks, alumina bricks, zirconium corundum bricks, mullite bricks, zircon, quartz bricks or various applicable fused bricks;

[0017] The combustion device (7) is composed of a fuel delivery system and a combustion system. The fuel delivery system includes a hydrogen gas pipeline (7-1), a natural gas gas pipeline (7-2), an oxygen gas pipeline (7-3), a primary gas mixing system (8-2) and a secondary gas mixing system (8-3). The input ends of the hydrogen gas pipeline (7-1), the natural gas gas pipeline (7-2) and the oxygen gas pipeline (7-3) are all connected to a gas source for supplying gas to the system. The hydrogen gas pipeline (7-1) and the natural gas gas pipeline (7-2) are connected to each other. 2) the output ends are connected to the input end of the primary gas mixing system (8-2) to achieve gas mixing of hydrogen and natural gas; the output ends of the primary gas mixing system (8-2) and the oxygen delivery pipeline (7-3) are connected to the input end of the secondary gas mixing system (8-3) to achieve gas mixing of hydrogen, natural gas and oxygen; the output end of the secondary gas mixing system (8-3) is connected to the input end of the second check valve (8-4); the output end of the second check valve (8-4) is connected to the flame gun (8-6) to heat the melt (5) by burning the flame of hydrogen or oxygen gas;

[0018] A filtering device (7-4), a primary pressure transmitter (7-5), a regulator (7-6), a secondary pressure transmitter (7-7), a first check valve (7-8), a gas valve (7-9), a flame retardant valve (8-0), a flow control valve (8-1) and a gas leakage sensor (8-5) are sequentially arranged between the input ends of the hydrogen gas transmission pipeline (7-1), the natural gas gas transmission pipeline (7-2) and the oxygen transmission pipeline (7-3) and the input end of the secondary gas mixing system (8-3);

[0019] The auxiliary electric melting assembly (6) provided in the kiln body (1) is located above the pool wall of the kiln body (1) and below the liquid surface of the melt (5), and is electrically connected to the control system (2) through a transformer (6-1); it is used to assist in heating the melt (5) when necessary to ensure the uniformity of the temperature and composition of the melt (5), and to promote the discharge of bubbles in the melt (5) and the precipitation of insoluble matter and precipitates;

[0020] A baffle brick (10) is provided between the clarification, precipitation and homogenization zone (13) and the cooling and temperature adjustment zone (14) in the kiln body (1), and is made of refractory material to promote the homogenization of the melt components through convection and prevent heat dissipation;

[0021] The depth of the rear passage of the cooling and temperature-adjusting zone (14) in the kiln body (1) is less than that of the melting zone (12) and the clarification, precipitation and homogenization zone (13), and a neck is arranged at the connection to ensure uniformity of the melt flowing into the cooling and temperature-adjusting zone;

[0022] The wall height of the collecting box (11) arranged in the kiln body (1) is lower than the liquid level of the melt (5) and flush with the bottom of the discharge port (9). When too much sediment is deposited, the feeding is stopped. After the melt liquid level is lower than the wall of the collecting box (11), the movable kiln body (15) below is moved away, and the bottom valve (16) is opened to discharge the sediment and melt in the collecting box (11);

[0023] The sensor (8) includes a temperature sensor and a gas sensor. The temperature sensor is a thermocouple or an infrared thermometer or other temperature measuring devices. The gas sensor is a gas detector.

[0024] Compared with the prior art, the present invention has at least the following main advantages:

[0025] 1. The basalt tank kiln system and melting method using hydrogen as the main fuel in the present invention uses hydrogen and oxygen as the main fuels, and is supplemented by natural gas combustion when necessary, which can effectively reduce the emission of carbon dioxide during the combustion process. At the same time, the temperature and atmosphere in the tank kiln can be timely and accurately controlled according to the data of the sensor and the control system, which can effectively prevent the alkaline vapor generated during the hydrogen combustion process while efficiently melting the raw materials, thereby improving the life of the tank kiln.

[0026] 2. The present invention utilizes hydrogen as fuel to reduce elements such as iron in basalt ore, and collects and removes precipitates / sediments through a provided collection box, which can effectively reduce the iron content in the melt and avoid crystallization in the subsequent cooling process, thereby improving the stability of the melt forming process and the mechanical properties of the product, and reducing the corrosion of the melt to subsequent process equipment.

[0027] 3. The present invention uses hydrogen and oxygen as the main fuels. Compared with the traditional natural gas flame heating device, hydrogen has a high calorific value and a high flame intensity, which can effectively improve the melting efficiency of the raw materials. At the same time, an electrode auxiliary heating device can be optionally provided below the melt surface to ensure the uniformity of the melt heating and temperature.

[0028] 4. The present invention arranges multi-level baffle bricks and baffles in the kiln body, and the depth of the rear passage is less than the depth of the melting zone and the clarification precipitation homogenization zone, and a clamp and a stirrer are arranged at the connection, which is beneficial to the melting, clarification, degassing and spontaneous homogenization of the basalt melt, so as to ensure the uniformity of the melt flowing into the cooling and temperature adjustment zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the combustion device of the present invention;

[0031] In the figure: (1) kiln body, (2) control system, (3) flue port, (4) feeding device, (5) melt, (6) auxiliary electric melting assembly, (7) combustion device, (8) sensor, (9) discharge port, (10) retaining brick, (11) collecting box, (6-1) transformer, (7-1) hydrogen gas pipeline, (7-2) natural gas gas pipeline, (7-3) oxygen gas pipeline, (7-4) filtering equipment, (7-5) primary pressure transmitter, (7-6) regulator, (7-7) secondary pressure transmitter, (7-8) check valve, (7-9) gas valve, (8-0) flame retardant valve, (8-1) flow control valve, (8-2) primary gas mixing system, (8-3) secondary gas mixing system, (8-4) check valve, (8-5) gas leakage sensor, (8-6) flame gun. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0033] Example 1

[0034] The present invention discloses a basalt pool kiln system using hydrogen as the main fuel. The system comprises: a kiln body 1, a control system 2, a flue port 3, a feeding device 4, a melt 5, an auxiliary electric melting component 6, a combustion device 7, a sensor 8, a discharge port 9, a retaining brick 10, a collecting box 11, a melting zone 12, a clarifying precipitation homogenizing zone 13, a cooling and temperature regulating zone 14, a movable kiln body 15 and a valve 16. The kiln body 1 is provided with a melting zone 12, a clarifying precipitation homogenizing zone 13 and a cooling and temperature regulating zone 14, a feeding device 4 is provided at one end of the melting zone 12, a discharge port 9 is provided at one end of the cooling and temperature regulating zone 14, a flue port 3 is provided on one side of the kiln body 1, and a plurality of sensors 8 and a plurality of combustion devices are provided on the upper part of the kiln body 1. Device 7, a baffle brick 10 is provided between the melting zone 12, the clarifying precipitation homogenization zone 13 and the cooling temperature adjustment zone 14 in the kiln body 1, a collecting box 11 is provided at the lower part of the kiln body 1, a valve 16 is provided at the bottom of the collecting box 11, a detachable component 15 is provided at the bottom of the kiln body 1, and a plurality of auxiliary electric melting components 6 are provided at the bottom of the pool wall, which are electrically connected to the control system 2 through a transformer 6-1; a discharge port 9 is provided on one side of the kiln body 1, and the control system 2 is electrically connected to the kiln body 1, the feeding device 4, the sensor 8 and the combustion device 7 respectively, and the feeding device 4, the auxiliary electric melting component 6 and the combustion device 7 are controlled according to the returned electrical signal to realize the control of the temperature of the melt 5 and the production efficiency, and a thermal insulation layer is provided on the outer side of the kiln body 1;

[0035] The combustion device 7 is composed of a fuel delivery system and a combustion system. The fuel delivery system includes a hydrogen gas pipeline 7-1, a natural gas gas pipeline 7-2, an oxygen gas pipeline 7-3, a primary gas mixing system 8-2 and a secondary gas mixing system 8-3; the input ends of the hydrogen gas pipeline 7-1, the natural gas gas pipeline 7-2 and the oxygen gas pipeline 7-3 are connected to a gas source; the output ends of the hydrogen gas pipeline 7-1 and the natural gas gas pipeline 7-2 are connected to the input end of the primary gas mixing system 8-2, and the output ends of the primary gas mixing system 8-2 and the oxygen gas pipeline 7-3 are connected to the input end of the secondary gas mixing system 8-3; the secondary gas mixing system 8 -3 output end is connected to the input end of the second check valve 8-4; the output end of the second check valve 8-4 is connected to the flame gun 8-6, and the basalt ore and the melt 5 are heated by the flame of the combustion gas; the hydrogen gas pipeline 7-1, the natural gas gas pipeline 7-2, the oxygen gas pipeline 7-3 input end to the primary gas mixing system 8-2, the secondary gas mixing system 8-3 input end are sequentially provided with a filter device 7-4, a primary pressure transmitter 7-5, a regulator 7-6, a secondary pressure transmitter 7-7, a first check valve 7-8, a gas valve 7-9, a flame retardant valve 8-0, a flow control valve 8-1 and a gas leakage sensor 8-5;

[0036] The melting method of the basalt fiber tank kiln system using hydrogen as the main fuel is carried out according to the following steps:

[0037] The system is composed of: a kiln body 1, a control system 2, a flue port 3, a feeding device 4, a melt 5, an auxiliary electric melting component 6, a combustion device 7, a sensor 8, a discharge port 9, a retaining brick 10, a collecting box 11, a melting area 12, a clarification precipitation homogenization area 13, a cooling and temperature adjustment area 14, a movable kiln body 15 and a valve 16;

[0038] a. The raw material of melt 5, basalt ore powder, is transported to the melting zone 12 in the kiln body 1 through the feeding device 4; the hydrogen / oxygen gas with a volume ratio of 7:3 is ignited through the combustion device 7, and the melt 5 basalt ore powder is heated by the heat radiation heat transfer of the flame to a temperature of 1450°C, wherein the main components of the basalt ore powder are: SiO2: 48.53wt%; Al2O3: 14.92wt%; Fe x O y : 12.23wt%; CaO: 7.52wt%; MgO: 8.46wt%; Na2O: 3.55wt%; TiO2: 2.10wt%; K2O: 1.86wt%; P2O5: 0.49wt%; MnO: 0.17wt%;

[0039] b. The melted basalt ore powder 5 flows in the kiln body 1, the temperature and the atmosphere in the kiln body 1 are monitored by the sensor 8, and the feeding speed and the flow rate of the combustion gas are regulated by the control system 2;

[0040] c. Under the reducing effect of hydrogen, the Fe metal element in the basalt ore powder of the melt 5 is precipitated and deposited at the bottom of the collecting box 11. When the deposition is too much, the feeding is stopped. After the liquid level of the basalt ore powder of the melt 5 is lower than the wall of the collecting box 11, the movable kiln body 15 below is moved away, and the valve 16 at the bottom of the collecting box 11 is opened to discharge the precipitated material and the melt in the collecting box 11;

[0041] d. The melt 5 basalt ore powder flows into the cooling and temperature adjustment zone 14 through the clarification, precipitation and homogenization zone 13, with the temperature of 1200°C, and flows out through the discharge port 9 to the basalt wire drawing plate, and is used to prepare basalt fiber through the winding device.

[0042] Example 2

[0043] The system described in this embodiment is performed according to Embodiment 1: The specific operation is performed according to the following steps:

[0044] a. The raw material of the melt 5, which is a basalt ore with a high iron content, is transported to the melting zone 12 in the kiln body 1 through the feeding device 4; the hydrogen, natural gas and oxygen gas with a volume ratio of 6:1:3 are ignited through the combustion device 7, and the basalt ore with a high iron content in the melt 5 is heated by the heat radiation heat transfer of the flame, and the temperature is 1500°C. Due to the high iron content of the raw material, the auxiliary electric melting component 6 is turned on, and the auxiliary combustion device heats the ore raw material and the melt 5; the composition of the basalt ore with a high iron content is as follows: SiO2: 49.28wt%; Al2O3: 13.64wt%; Fe x O y : 16.00wt%; CaO: 7.56wt%; MgO: 6.35wt%; Na2O: 2.92wt%; TiO2: 1.78wt%; K2O: 1.02wt%; P2O5: 0.30wt%; MnO: 0.14wt%;

[0045] b. The melt 5 of the basalt ore with high iron content flows in the kiln body 1. The temperature and the atmosphere in the kiln body (1) are monitored by the sensor 8, and the feeding speed and the flow rate of the combustion gas are regulated by the control system 2;

[0046] c. Under the reducing effect of hydrogen, the Fe metal element in the basalt ore with high iron content in the melt 5 is precipitated, and part of it is further oxidized into iron oxide and deposited at the bottom of the collecting box 11. When too much deposition occurs, the feeding is stopped. After the liquid level of the basalt ore with high iron content in the melt 5 is lower than the wall of the collecting box 11, the movable kiln body 15 below is removed, and the valve 16 at the bottom of the collecting box 11 is opened to discharge the precipitated material and the melt 5 in the collecting box 11;

[0047] d. Melt 5 high iron content basalt ore flows into cooling and temperature adjustment zone 14 through clarification precipitation homogenization zone 13 at a temperature of 1300°C, and flows out through discharge port 9 to a four-roller rock wool centrifuge to produce rock wool;

[0048] After two months of continuous production, the feeding is stopped. When the liquid level of the melt 5 is lower than the wall of the collecting box 11, the lower insulation layer is removed, and the bottom valve 16 is opened to discharge the precipitated material and the melt 5 in the collecting box 11, and then the feeding and production are continued.

[0049] Example 3

[0050] The system described in this embodiment is performed according to Embodiment 1: The specific operation is performed according to the following steps:

[0051] a. The raw material of the melt 5, which is a basalt ore with a high silicon content, is transported to the melting zone 12 in the kiln body 1 through the feeding device 4; the hydrogen and oxygen gas with a volume ratio of 6:4 are ignited through the combustion device 7, and the basalt ore with a high silicon content in the melt 5 is heated by the heat radiation heat transfer of the flame to a temperature of 1350°C, wherein the composition of the basalt ore with a high silicon content is as follows: SiO2: 54.95wt%; Al2O3: 13.30wt%; Fe x O y : 9.56wt%; CaO: 6.54wt%; MgO: 3.50wt%; Na2O: 7.33wt%; TiO2: 0.85wt%; K2O: 3.26wt%; P2O5: 0.29wt%; MnO: 0.42wt%;

[0052] b. The melt 5 of the basalt ore with high silicon content flows in the kiln body 1. The temperature and the atmosphere in the kiln body 1 are monitored by the sensor 8, and the feeding speed and the flow rate of the combustion gas are regulated by the control system 2;

[0053] c. Under the reducing effect of hydrogen, the Fe metal element in the basalt ore with high iron content in the melt 5 is precipitated, and a part of it is further oxidized into iron oxide and deposited at the bottom of the collecting box 11. When too much deposition occurs, the feeding is stopped. After the liquid level of the basalt ore with high iron content in the melt 5 is lower than the wall of the collecting box 11, the movable kiln body 15 below is removed, and the valve 16 at the bottom of the collecting box 11 is opened to discharge the precipitated material and the melt in the collecting box 11;

[0054] d. The basalt ore with high iron content in melt 5 flows into the cooling and temperature adjustment zone 14 through the clarification, precipitation and homogenization zone 13 at a temperature of 1300°C, and flows out through the discharge port 9 to the basalt flake forming tube to form basalt flakes under the action of negative pressure.

Claims

1. A basalt tank kiln system using hydrogen as the main fuel, characterized in that: The system comprises: a kiln body (1), a control system (2), a flue port (3), a feeding device (4), a melt (5), an auxiliary electric melting assembly (6), a combustion device (7), a sensor (8), a discharge port (9), a retaining brick (10), a collecting box (11), a melting zone (12), a clarifying sedimentation homogenization zone (13), a cooling and temperature adjustment zone (14), a movable kiln body (15) and a valve (16). The kiln body (1) is provided with a melting zone (12), a clarifying sedimentation homogenization zone (13) and a cooling and temperature adjustment zone (14); a feeding device (4) is provided at one end of the melting zone (12); a discharge port (9) is provided at one end of the cooling and temperature adjustment zone (14); a flue port (3) is provided on one side of the kiln body (1); a plurality of sensors (8) and a plurality of combustion devices (7) are provided on the upper part of the kiln body (1); Brick blocks (10) are provided between the melting zone (12), the clarifying precipitation homogenization zone (13) and the cooling temperature adjustment zone (14) in the kiln body (1); a plurality of collecting boxes (11) are provided at the bottom of the kiln body (1); a valve (16) is provided at the bottom of the collecting boxes; a movable kiln body (15) is provided at the bottom of the kiln body (1); a plurality of auxiliary electric melting components (6) are provided at the bottom of the pool wall and are electrically connected to the control system (2) through a transformer (6-1); a discharge port (9) is provided at one side of the lower part of the kiln body (1); the control system (2) is electrically connected to the kiln body (1), the feeding device (4), the sensor (8) and the combustion device (7) respectively, and controls the feeding device (4), the auxiliary electric melting components (6) and the combustion device (7) according to the returned electrical signals, so as to realize the control of the temperature of the melt (5) and the production efficiency; and a thermal insulation layer is provided on the outer side of the kiln body (1).

2. The basalt fiber tank kiln system using hydrogen as the main fuel according to claim 1 is characterized in that: The combustion device (7) is composed of a fuel delivery system and a combustion system. The fuel delivery system includes a hydrogen gas delivery pipeline (7-1), a natural gas gas delivery pipeline (7-2), an oxygen delivery pipeline (7-3), a primary gas mixing system (8-2) and a secondary gas mixing system (8-3). The input ends of the hydrogen gas delivery pipeline (7-1), the natural gas gas delivery pipeline (7-2) and the oxygen delivery pipeline (7-3) are connected to a gas delivery source. The output ends of the hydrogen gas delivery pipeline (7-1) and the natural gas gas delivery pipeline (7-2) are connected to the input end of the primary gas mixing system (8-2). The output ends of the primary gas mixing system (8-2) and the oxygen delivery pipeline (7-3) are connected to the input end of the secondary gas mixing system (8-3). The output end of the check valve (8-3) is connected to the input end of the check valve (8-4); the output end of the check valve (8-4) is connected to the flame gun (8-6), and the basalt ore and the melt (5) are heated by the flame of the combustion gas; a filter device (7-4), a primary pressure transmitter (7-5), a regulator (7-6), a secondary pressure transmitter (7-7), a check valve (7-8), a gas valve (7-9), a flame retardant valve (8-0), a flow control valve (8-1) and a gas leakage sensor (8-5) are sequentially arranged between the input ends of the hydrogen gas pipeline (7-1), the natural gas gas pipeline (7-2), and the oxygen gas pipeline (7-3) to the primary gas mixing system (8-2) and the input end of the secondary gas mixing system (8-3).

3. A melting method of a basalt fiber tank kiln system using hydrogen as main fuel as claimed in claim 1, characterized in that: Follow these steps: The system is composed of: a kiln body (1), a control system (2), a flue port (3), a feeding device (4), a melt (5), an auxiliary electric melting component (6), a combustion device (7), a sensor (8), a discharge port (9), a retaining brick (10), a collecting box (11), a valve (16), a melting zone (12), a clarification, precipitation and homogenization zone (13), a cooling and temperature adjustment zone (14), a movable kiln body (15) and a valve (16); a. The raw material of the melt (5) is basalt ore powder, basalt ore with a high iron content or basalt ore with a high silicon content, and is transported to the melting zone (12) in the kiln body (1) through the feeding device (4); hydrogen / oxygen / natural gas is ignited through the combustion device (7), and the melt (5) is heated by heat radiation transfer of the flame; b. The melted material (5) flows in the kiln body (1), the temperature and the atmosphere in the kiln (1) are monitored by the sensor (8), and the feeding speed and the flow rate of the combustion gas are regulated by the control system (2); c. Under the reducing effect of hydrogen, the Fe metal element in the melt (5) is precipitated and deposited at the bottom of the collecting box (11). When too much deposit is formed, the feeding is stopped. After the liquid level of the melt (5) is lower than the wall of the collecting box (11), the movable kiln body (15) below is removed, and the bottom valve (16) is opened to discharge the precipitated material and the melt in the collecting box (11); d. The melt (5) flows into the cooling and temperature adjustment zone (14) through the clarification, precipitation and homogenization zone (13) and then flows out through the discharge port (9).

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