A kind of ferromolybdenum and preparation method thereof

A technology of ferro-molybdenum and iron powder, applied in the field of ferro-molybdenum and its preparation, can solve the problems of producing nitrogen oxides or fluorides, difficult temperature control, and high reaction temperature, and achieves low price, strong adaptability and low reaction temperature. Effect
CN104762544BActive Publication Date: 2016-08-24JINDUICHENG MOLYBDENUM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JINDUICHENG MOLYBDENUM CO LTD
Publication Date
2016-08-24

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Abstract

The invention discloses ferro-molybdenum made of mixture powder and reducing agents. The mixture powder comprises, by weight, 21.0%-42.9% of molybdenum oxide powder, 0%-50.3% of iron oxide powder, 0%-33.2% of iron powder, 3.6%-23.5% of calcium molybdate and 3.2%-22.3% of industrial waste residue. In addition, the invention further discloses a method for preparing the ferro-molybdenum. According to the ferro-molybdenum and the preparation method thereof, carbon powder is adopted to serve as the reducing agents, the mixture powder and the reducing agents are mixed and then roasted at the temperature of not higher than 1600 DEG C to prepare the ferro-molybdenum, and pollutants such as nitrogen oxide and fluoride do not exist in the preparation process; the adaptability of the raw material formula is strong, compared with the traditional aluminothermy adopted to prepare the ferro-molybdenum, the quality adjustment and the quantity adjustment of the raw material formula have a good raw material adaptability.
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Description

technical field

[0001] The invention belongs to the technical field of ferromolybdenum preparation, and in particular relates to a ferromolybdenum and a preparation method thereof. Background technique

[0002] At present, the domestic mainstream production process of ferromolybdenum products needs to adopt the aluminothermic method, which is often called the outer furnace method. The furnace used in the outer furnace method is a cylinder placed on a sand base, and clay brick lining is built inside. Ferrosilicon containing 75% silicon and a small amount of aluminum particles are used as the reducing agent. After the charge is added to the furnace barrel at one time, it is prepared by the upper ignition method, that is, it is ignited with an initiator (saltpeter, aluminum chips or magnesium chips) on the surface of the material. After ignition, That is, a violent reaction occurs, and then sedation, slag discharge, and removal of the furnace cylinder. The ferromolybdenum ingo...

Claims

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