Ferromolybdenum smelting batching system

Abstract

The invention discloses a ferromolybdenum smelting batching system. The ferromolybdenum smelting batching system comprises a first charging unit comprising a first charging hopper, a first screw conveyor and a first bucket elevator, a first conveyor provided with a material inlet, a steel scrap outlet, an iron phosphate outlet and a lime outlet, a second charging unit comprising a second charginghopper, a second screw conveyor and a second bucket elevator, a second conveyor provided with a material inlet, an aluminum powder outlet, a ferrosilicon powder outlet and a molybdenum concentrate outlet; a material bin comprising a lime bin, an iron phosphate bin, a steel scrap bin, an aluminum powder bin, a ferrosilicon powder bin and a molybdenum concentrate bin, a belt conveyor connected withthe lime bin, the iron phosphate bin, the steel scrap bin, the aluminum powder bin, the ferrosilicon powder bin and the molybdenum concentrate bin, a buffering and metering bin connected with the beltconveyor, a mixer connected with the buffering and metering bin, a smelting furnace connected with the mixer, and a control unit connected with the first conveyor, the second conveyor, the material bin and the buffering and metering bin.

Description

technical field [0001] The invention belongs to the technical field of rare metal smelting, in particular, the invention relates to a batching system for ferromolybdenum smelting. Background technique [0002] In the production process of ferromolybdenum, ferro-vanadium, ferro-tungsten, ferro-titanium and other ferroalloys outside the furnace, the furnace charge needs to be accurately proportioned. Smelting is carried out by adding the mixed materials into the melting furnace in one or two stages. If the dosage of each component in the furnace charge is not accurate, the following consequences will often be caused during the smelting process: the reaction is too intense and the charge is splashed or the reaction is slow so that the slag and iron cannot be separated. [0003] For ferromolybdenum, the silicon-aluminum thermal reduction method is commonly used at home and abroad, which is a kind of out-of-furnace method. The main material in the formula is roasted molybdenum c...

AI Technical Summary

Problems solved by technology

After the main and auxiliary materials are mixed evenly according to a certain proportion, they are put into the furnace as the charge and smelted. The smelting process is very fast. Once the ignition reaction occurs, the smelting process can only be carried out spontaneously by the heat release of the charge reaction, and there is no external heat supply or addition of materials.

Therefore, the batching and mixing process of the charge has become the key factor affecting the smelting of ferromolybdenum. The core of the process is the batching and mixing, which requires accurate and uniform mixing. If the batching is inaccurate or the mixing is uneven, it will affect the redox process in the smelting process. Reaction and heat balance lead to poor furnace condition stability, affect the safe production and product quality of the enterprise, and reduce the recovery rate of molybdenum

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