Sintering mixture alkalinity adjusting system

Abstract

The utility model relates to a sintering mixture alkalinity adjusting system. A plurality of material bins; the valve group is used for controlling the discharge of the materials and comprises a manual valve and an automatic valve which are arranged on the discharge port of the stock bin; the first-stage conveying assembly and the second-stage conveying assembly are arranged under the valve group, the second-stage conveying assembly is located below the first-stage conveying assembly and comprises a plurality of roller ways and conveying belts tensioned on the peripheral surfaces of the roller ways, and weighing roller ways for weighing materials are further arranged among the roller ways; the component analyzer is mounted right above the second-stage conveying assembly so as to detect the components of the materials on the second-stage conveying assembly; through the integrated component analyzer and the weighing roller way, the system can detect the components and the weight of the mixture in real time, so that the proportion of the alkaline oxide to the acidic oxide is accurately calculated, and compared with a traditional artificial experience method, the real-time performance and the accuracy are higher, and the stability of the alkalinity of the sintered ore can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor technology, specifically to a sintering mixture alkalinity adjustment system. Background Technology

[0002] With the rapid development of my country's steel industry, blast furnaces have become an indispensable and important link in the steel industry, and are gradually developing towards large-scale, energy-saving and high-efficiency. The high output, high efficiency and stable operation of blast furnaces are crucial to the overall benefits of steel enterprises. As one of the main raw materials of blast furnaces, the quality of sintered ore directly affects the production efficiency and product quality of blast furnaces.

[0003] Sinter basicity is an important indicator for measuring sinter quality. It has a significant impact on the control and operation of blast furnace slag basicity. The higher the stability of sinter basicity, the better the quality of blast furnace hot metal, the more stable the furnace conditions, and the lower the fuel consumption. Therefore, improving the stability rate of sinter basicity is of great significance for improving the quality and output of blast furnace hot metal and reducing energy consumption. The basicity of sinter is determined by the ratio of basic oxides to acidic oxides in the mixture of solvent, fuel, iron ore, etc. In order to obtain stable sinter basicity, it is necessary to control and adjust the ratio of basic oxides to acidic oxides in these mixtures in real time.

[0004] However, in the traditional sinter production process, the control and adjustment of this process often rely on human experience, lacking real-time and accuracy, making it difficult to meet the strict requirements of modern blast furnace production for sinter quality.

[0005] Therefore, developing a system capable of real-time monitoring and adjustment of the ratio of basic oxides and acidic oxides in sintering mixtures to maintain stable sinter basicity has become an urgent problem to be solved in the current steel industry. Utility Model Content

[0006] The technical problem this invention aims to solve is to address the shortcomings of existing technologies by providing a method that calculates the amount of weight to be increased or decreased based on the real-time weight of the mixed material on the conveyor belt and the real-time weight of the alkaline material on the conveyor belt, and the content of alkaline oxides in the alkaline material, thereby controlling the opening degree of the valve to adjust the alkalinity of the sintering mixture.

[0007] The technical problem to be solved by this utility model is achieved through the following technical solution: a sintering mixture alkalinity adjustment system, comprising;

[0008] Several silos, each filled with different materials, have an inlet at the top and an outlet at the bottom;

[0009] A valve group for controlling material discharge is arranged at the discharge port of the silo, and comprises a manual valve and an automatic valve mounted on the discharge port of the silo, with the manual valve being above the automatic valve.

[0010] A first conveying assembly and a second conveying assembly are arranged directly below the valve group, with the second conveying assembly being below the first conveying assembly, and each comprising a plurality of roller conveyors and a conveying belt tensioned on the outer circumferential surface of the roller conveyors, and a weighing roller conveyor is arranged between the plurality of roller conveyors to weigh the material.

[0011] A component analyzer is arranged directly above the second conveying assembly to detect the components of the material on the second conveying assembly.

[0012] The technical problems solved by the utility model can also be solved by the following technical solutions, the sintering mixture alkalinity adjustment system, the installation heights of the plurality of silos are the same.

[0013] The technical problems solved by the utility model can also be solved by the following technical solutions, the sintering mixture alkalinity adjustment system, the distances from the discharge ports of the plurality of silos to the first conveying assembly are the same.

[0014] The technical problems solved by the utility model can also be solved by the following technical solutions, the sintering mixture alkalinity adjustment system, the weighing roller conveyor is an electronic roller scale.

[0015] Compared with the prior art, the utility model has the beneficial technical effects that: through the integrated component analyzer and weighing roller conveyor, the system can detect the components and weight of the mixture in real time, so that the proportion of alkaline oxides and acidic oxides can be accurately calculated, the real-time performance and accuracy are higher compared with the traditional manual experience method, and the sintering ore alkalinity can be ensured to be stable;

[0016] And through the accurate control of the alkalinity of the sintered ore, the production efficiency and product quality of the blast furnace can be improved, the stable sintered ore alkalinity means better blast furnace molten iron quality and lower fuel consumption, so that the overall benefit of the steel enterprise is improved, the production cost is further reduced, the safety risk in the production process is also reduced, and the controllability and safety of the production environment are improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a partial structure schematic diagram of the component analyzer in the utility model. Figure 1

[0019] ​Attached reference numerals: 1. Hopper; 2. Discharge port; 3. Manual valve; 4. Automatic valve; 5. Primary conveyor assembly; 6. Weighing roller conveyor; 7. Component analyzer; 8. Secondary conveyor assembly. Detailed Implementation

[0020] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0021] Example 1, referring to Figures 1-2 A sintering mixture basicity adjustment system, comprising:

[0022] Several silos 1 are filled with different kinds of materials, and each silo 1 stores only one kind of material. The installation height of the several silos 1 is the same. They have a feed inlet at the top and a discharge outlet 2 at the bottom. The discharge outlet 2 of each silo 1 is at the same distance from the primary conveying assembly. A valve group for controlling the discharge of materials is set at the discharge outlet 2 of the silo 1. It includes a manual valve 3 and an automatic valve 4 installed on the discharge outlet 2 of the silo 1. The automatic valve 4 can be a solenoid valve, etc., and its specifications and models are not limited to this. The manual valve 3 is located above the automatic valve 4. The discharge of materials from the silo 1 can be controlled through the valve group.

[0023] The primary conveying assembly 5 and the secondary conveying assembly 8 are located directly below the valve group. The secondary conveying assembly 8 is located below the primary conveying assembly 5. Both of them include several roller conveyors and a conveyor belt tensioned on the outer circumference of the roller conveyors. A weighing roller conveyor 6 for weighing materials is also provided between the several roller conveyors. The weighing roller conveyor 6 is an electronic roller conveyor scale, and its model and specifications can be selected according to the usage requirements.

[0024] The component analyzer 7, whose model and specifications can be selected according to the usage requirements, is installed directly above the secondary conveying assembly 8 to detect the composition of the materials on the secondary conveying assembly 8.

[0025] The steps for using the sintering mixture basicity adjustment system in Example 1 are as follows:

[0026] (1) Select the alkalinity category in the control room. The default is binary alkalinity. You can also select ternary alkalinity or quaternary alkalinity. Then enter the target value and range of alkalinity, such as 1.8±0.05. Wherein, alkalinity R = content of alkaline oxides / content of acidic oxides.

[0027] Binary alkalinity R2 = CaO / SiO2;

[0028] Ternary alkalinity R3 = (CaO + MgO) / SiO2;

[0029] Quaternary basicity R4 = (CaO + MgO) / (SiO2 + Al2O3)

[0030] Note: CaO, MgO, SiO2, Al2O3 in the formula are all the weight percentage in the mixture;

[0031] (2) The material in the bin 1 is released to the first conveying assembly 5 through the valve group, and weighed while conveying. At this time, the control room can obtain the weight information and the material name, and the material name can be known when the valve group of the corresponding bin 1 is opened;

[0032] (3) After the material in each bin 1 is discharged to the second conveying assembly 8, a mixed material composed of multiple materials is formed. The composition analyzer 7 on the second conveying assembly 8 detects the composition of the mixed material, so as to know the content of the basic oxide and the acidic oxide in the mixed material, and provide an important basis for subsequent calculation of the basicity value;

[0033] After the composition detection, the weighing is performed again. At this time, the control room obtains the composition and weight information of the mixed material, and provides a regulation basis for the regulation of the opening degree of the valve group. The linear ratio of the opening degree of the valve group and the specific composition of the mixed material can be obtained according to the test, and therefore the specific proportion value is not described again.

Claims

1. A sintering mixture basicity adjustment system, characterized in that: It includes; Several silos, each filled with different materials, have an inlet at the top and an outlet at the bottom; A valve assembly for controlling material discharge is installed at the outlet of the silo. It includes a manual valve and an automatic valve installed at the outlet of the silo, with the manual valve located above the automatic valve. The primary conveying assembly and the secondary conveying assembly are located directly below the valve group. The secondary conveying assembly is located below the primary conveying assembly. Both of them include several roller conveyors and a conveyor belt tensioned on the outer circumference of the roller conveyors. Weighing roller conveyors for weighing materials are also provided between the several roller conveyors. The component analyzer is installed directly above the secondary conveying assembly to detect the composition of the materials on the secondary conveying assembly.

2. The sintering mixture basicity adjustment system according to claim 1, characterized in that: The installation height of several of the aforementioned silos is the same.

3. The sintering mixture basicity adjustment system according to claim 1, characterized in that: The discharge port of each of the aforementioned hoppers is at the same distance from the primary conveyor assembly.

4. The sintering mixture basicity adjustment system according to claim 1, characterized in that: The weighing roller conveyor is an electronic roller conveyor scale.

Images