A fluidized reactor and a method for treating ore using the reactor

Abstract

The invention relates to a fluidized reactor (1). The reactor (1) is at least provided with a combustion chamber (10) and a first reaction chamber (20). The combustion chamber (10) and the first reaction chamber (20) are spaced through a jet arch (11) arranged on the top of the combustion chamber (10). High-temperature gas generated by combustion in the combustion chamber (10) can be jetted into the first reaction chamber (20) through a flow jet channel (11) formed in the jet arch (11). The high-temperature gas jetted into the first reaction chamber (20) can be used for lifting solid particle materials of the first reaction chamber (20) and carrying out high-temperature heating reaction. The reactor is suitable for medium-and-low-grade ore, and solves the problem that when a reactor in the prior art is used in the prior art, energy consumption is high. The reactor is particularly used for controlling the reaction state of the medium-and-low-grade ore, and the problem that the materials are melted and coked and accordingly a slag discharge port is plugged is solved.

Description

technical field [0001] The invention relates to a reactor in the technical field of chemical production and a method for using the reactor to process ore, in particular to a fluidized reactor suitable for solid particles and a method for using the fluidized reactor to process ore. Background technique [0002] As we all know, mineral resources are the material basis for human survival and development. According to relevant statistics, 70% of raw materials for industrial products in the world come from mineral resources, and 90% of energy comes from mineral resources. my country is one of the few countries in the world rich in mineral resources and complete in mineral types. my country's mineral resources have the following characteristics: [0003] First, the distribution of minerals is uneven. Some important pillar minerals are mostly in shortage or have insufficient proven reserves, and need to rely on imports for a long time. Second, there are more lean ore and less ri...

AI Technical Summary

Problems solved by technology

[0003] First, the distribution of minerals is uneven. Some important pillar minerals are mostly in shortage or insufficient proven reserves, and need to rely on imports for a long time

Second, there are more lean ores and less rich ores, and the proportion of low-grade refractory ores is large. For example, the average grade of iron ore in my country is 33.5%, which is more than 10 percentage points lower than the world average; the average grade of manganese ore is only 22%. The 48% of the world's commodity ore industry standard is far away; the average grade of copper ore is only 0.87%; the average grade of phosphate rock is only 16.95%; almost all bauxite is diaspore, which is very difficult to separate and extract

However, this patent has the following defects in the implementation process: firstly, the gas distributor of this patent has a planar structure. If more solid particles are deposited on the gas distributor, it is difficult for the planar gas distributor to bear its gravity and easily Cause fracture, and the slag port is set above the gas distributor, and the gas distributor with a planar structure is not conducive to the smooth discharge of slag

However, the roasting chamber of this patent has a multi-tube structure, and multiple burners are needed to meet the heat requirements of each tube, which not only increases the cost of equipment and wastes fuel; moreover, even if multiple burners are distributed, it is difficult to ensure that each tube The reduction temperature is uniform, resulting in differences in the quality of the reduction products

In this patent, the air after recovering waste heat is re-introduced into the gas inlet pipe. Although the utilization of heat energy can be improved, the gas and air are mixed unevenly, and the fuel burns to form a long flame, which makes the combustion insufficient and causes energy waste.

[0007] In addition, in the comprehensive utilization technology of medium and low-grade ores, there are the following two technical problems that are easily overlooked by those skilled in the art: First, at high temperatures, some components in the ore are prone to form molten substances, such as coke and silica , phosphate rock, etc.; when the molten material flowing viscously on the furnace wall drops to the discharge port, the temperature drop will easily cause the molten material to coke, which will block the discharge port, making the reaction impossible to proceed continuously, and requires Frequent cleaning of the reactor

Second, most of the thermal insulation materials used in existing reactors are unshaped refractory materials, such as mullite castables, high alumina castables or corundum castables. The thickness of the refractory layer used is usually 1000-1400mm, although existing The refractory material layer used in the technology can effectively control the loss of heat in the furnace, but the thickness of the refractory material layer is relatively thick, which greatly reduces the available space of the reactor

[0008] Therefore, there is an urgent need to develop an advanced reactor that can replace the backward reaction equipment in the prior art to solve the problem of utilization of middle and low grade ores

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