Iron ore magnetic roasted ore waste heat recovery process and iron ore magnetic roasted ore waste heat recovery equipment
A waste heat recovery equipment and magnetization roasting technology, which is applied in the field of iron ore beneficiation, can solve the problems of limited application, difficulty in obtaining, and lack of versatility, so as to reduce the cost of beneficiation, reduce roasting heat consumption, and improve the effect of on-site working environment
Active Publication Date: 2015-02-04
TIANJIN CEMENT IND DESIGN & RES INST
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Problems solved by technology
The cooling medium selected in this process is blast furnace gas, which is not easy to obtain; and the cooling equipment is a vertical cooler, which has a certain limit on the particle size of the material; neither the selection of the cooling medium nor the cooling equipment is universal, which greatly limits the method. Application in mineral processing field
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[0021] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0022] see figure 1 with figure 2 , a kind of waste heat recovery process of iron ore magnetization roasting ore, comprises the following steps:
[0023] 1) The high-temperature iron ore magnetized roasting ore is sprayed and quenched to 450-500°C by using a single-cylinder cooler 2 with a built-in water spray device;
[0024] 2) Use the grate cooler 1 or the single-cylinder cooler 11 to air-cool the iron ore magnetized roasted ore rapidly cooled to 450-500°C to below 100°C, and at the same time introduce the hot air from the grate cooler 1 or the single-cylinder cooler 11 The magnetization roasting equipment 10 or 12 is used as the combustion-supporting air for fuel combustion.
[0025] see figure 1 , the first equipment to realize the ...
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The invention discloses an iron ore magnetic roasted ore waste heat recovery process which comprises the following steps: 1) spraying water to high-temperature iron ore magnetic roasted ore by use of a single-cylinder cooling machine with a built-in water spraying device so as to rapidly cool the high-temperature iron ore magnetic roasted ore to 450-500 DEG C; 2) air-cooling the iron ore magnetic roasted ore, which is rapidly cooled to 450-500 DEG C by use of a grate cooling machine or the single-cylinder cooling machine, to be less than 100 DEG C and inducing hot air discharged from the grate cooling machine or the single-cylinder cooling machine to magnetic roasting equipment so as to serve as combustion-supporting air for fuel combustion. The invention also discloses equipment for realizing the iron ore magnetic roasted ore waste heat recovery process. The equipment has an iron ore high-temperature magnetic roasted ore anaerobic cooling and waste heat recovery functions, is capable of ensuring the iron ore magnetic roasted ore quality, realizing waste heat recovery of high-temperature magnetic roasted ore, greatly reducing the roasting heat consumption, reducing the ore dressing cost and improving the fieldwork environment, and has the characteristics of energy conservation and environmental friendliness.
Description
technical field [0001] The invention belongs to the technical field of iron ore beneficiation, and in particular relates to a waste heat recovery process and equipment of iron ore magnetized roasting ore. Background technique [0002] my country is rich in iron ore resources, but there are few rich ores and many lean ores. The overall average grade is about 30-33%. It needs to go through a complicated beneficiation process to meet the grade requirements of industrial application grade. Furthermore, most of the useful minerals in the ore are fine-grained to fine-grained, and the ore types are complex, with many associated components, so the cost of mineral processing is high. On the one hand, this has caused a large amount of low-grade iron ore resources in my country to be unable to be effectively developed and utilized, resulting in a serious waste of mineral resources; Over 60%), the fluctuation of iron ore international market price is a serious challenge to national econ...
Claims
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IPC IPC(8): F27D15/02F27D17/00
CPCY02P10/25Y02P80/15
Inventor 郭涛俞为民彭学平李小燕
Owner TIANJIN CEMENT IND DESIGN & RES INST