Method for preparing iron-nickel alloy by-product active submerged arc furnace granulated slag by using red mud and laterite nickel ore

Abstract

The invention provides a method for preparing ferronickel byproduct active smelting electric furnace grain slag through red mud and nickel laterite ore. The method is characterized by comprising the following steps that 1, proportioning is carried out, specifically, raw materials include the red mud, the nickel laterite ore, coke powder and lime; and 2, reduction smelting of a smelting electric furnace is carried out, specifically, clusters formed through the raw materials prepared in the step 1 are conveyed into the smelting electric furnace for reduction smelting, slag and iron separation is completed through slag pre-making, melting and reduction, a furnace slag layer is formed, the furnace slag is discharged out of a slag opening regularly and subjected to water quenching or air-cooling pelletization, and the active smelting electric furnace grain slag is obtained. The smelting electric furnace grain slag prepared through the method can serve as a mixed material applied in the cement production process, the cement performance is improved, the variety and labels of cement products are adjusted, and the production cost is reduced; and meanwhile, the slag can be used for producing a concrete admixture independently or by being combined with other raw concrete admixture materials, and the resource utilization of the ferronickel byproduct active smelting electric furnace grain slag prepared through the red mud and the nickel laterite ore is effectively achieved.

Description

technical field [0001] The invention relates to the fields of Portland cement and its concrete production technology and iron and steel metallurgy technology, in particular to a method for preparing iron-nickel alloy by-product active submerged arc furnace granulated slag by using red mud and laterite nickel ore. Background technique [0002] Red mud is the residue formed after alumina is extracted from bauxite. The residue is rich in chemical components such as ferric oxide, silicon dioxide, aluminum oxide, calcium oxide and sodium oxide. For every ton of alumina produced, about 0.8-2.0 tons of red mud are produced. At present, the world produces about 90 million tons of red mud every year, of which nearly 30 million tons are produced in China. At present, only a very small part of the red mud in the world is comprehensively utilized, and most of it is still sent to the yard for open storage, which not only occupies a lot of land, but also costs a lot of money, and it is e...

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Problems solved by technology

The above-mentioned utilization methods have not effectively solved the resource utilization problem of ferronickel smelting slag, resulting in the current situation of a large amount of stockpiling of ferronickel smelting slag

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