200,000 tons of iron ore plant design
1.1 Overview
With the continuous development of modern science and technology, the consumption of mineral resources is increasing, the requirements for the comprehensive utilization of mineral resources are gradually improved, and the environmental protection law is becoming more and more perfect. It also promotes the rapid development of mineral processing technology , and it is possible that the economic treatment is low. Grade ore. Design should strive to reduce investment and production costs to achieve greater economic benefits. China's mineral processing industry has developed rapidly, the level of mineral processing technology and technical equipment has been continuously improved, and various types of mineral processing plants have been designed and built, and accumulated a large number of design and production experience.
However, in general, China's minerals are still in a state of short supply. In recent years, China's major steel mills have successively put into operation new blast furnaces. The iron concentrates required for these blast furnaces have not met the demand. In addition, China's imported ore has been reduced year by year, so it has been established in China. The concentrator is very necessary, and the design of the 200,000-ton iron ore plant is also of great significance.
Therefore, we designed the Hongfanchi iron ore beneficiation plant that processes 200,000 tons of raw ore annually.
1.2 Construction conditions
The design of 200,000 tons of iron ore mine construction, Hongfanchi iron ore dressing plant is located in Hongfanchi Town, Pingyin County, Shandong Province, at 116°27ˊ east longitude and 36°16ˊ north latitude. Pingyin has an advantageous geographical location and convenient transportation and communication. 105, 220 two national highways and 014 provincial highways run through the whole territory, connected with the Beijing-Shanghai, Beijing-Kowloon two major arteries, and there are hills, using the terrain to build factories according to the slope.
The water and electricity supply in the mining area is convenient, and the tailings pond can be selected in the valley section of the plant on the three sides of the ring.
Pingyin County is a warm temperate continental semi-humid climate with four distinct seasons, sufficient sunshine and concentrated precipitation. The coldest month of the year, the average temperature was -0.7 °C, the hottest month was July, and the average temperature was 27.5 °C. It is rainy in summer, with an average annual precipitation of 377.8 mm, accounting for 62% of the annual precipitation.
The mining area is rich in products and densely populated.
In summary, the mining area has the conditions for plant construction.
1.3 Main features of design and main technical and economic indicators
200,000 tons of iron ore construction plant design, the ore processed by the concentrator is magnetite, the magnetic is strong, so the design uses weak magnetic separation. In order to maximize the recovery of magnetic products in the ore, the selection process uses a phased grinding phase selection process. Under the premise of ensuring the recovery rate, in order to further improve the concentrate grade, magnetic selection of the magnetically selected magnetic products was carried out.
The ore dressing plant designs an annual processing capacity of 200,000 tons of raw ore, with an annual output of 66,100 tons of concentrate, with a selection ratio of 4.36. The original ore grade is 22.46%, the concentrate grade is 68.0%, the recovery rate is 70.0%, and the tailings grade is 10.8%.
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