Method for co-producing ferrovanadium and calcium aluminate cement

A technology of calcium aluminate cement and ferrovanadium, which is applied in the direction of cement production, etc., can solve the problems of restricting the application of high added value and the fluctuation of magnesium oxide content, so as to improve the added value of utilization, reduce the melting point, and reduce the loss of vanadium Effect
CN110668718AActive Publication Date: 2020-01-10PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Publication Date
2020-01-10

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Abstract

The invention relates to the technical field of alloy smelting, and discloses a method for co-producing ferrovanadium and calcium aluminate cement. The method comprises the following steps: (1) mixingan aluminum oxide knotting material, a binder and an auxiliary binder, knotting a furnace lining, and then curing and drying the knotted furnace lining; (2) preparing vanadium pentoxide, aluminum particles, lime and scrap iron into a mixture, wherein taking the total weight amount of the mixture as 100 parts, the content of the lime is 20-25 parts; (3) adding the mixture obtained in the step (2)into an electric furnace, starting the electric furnace for smelting, and separating ferrovanadium slag from ferrovanadium alloy; and (4) carrying out crushing, pre-grinding, magnetic separation ironremoval and fine grinding on the ferrovanadium slag separated in the step (3) to obtain pure calcium aluminate cement. According to the method, aluminum oxide is adopted as a furnace lining knotting material, the content of lime is increased to 20-25% for ferrovanadium smelting, pure calcium aluminate cement can be obtained from an obtained slag phase, and the utilization additional value of ferrovanadium slag is increased.
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Description

technical field

[0001] The invention relates to the technical field of alloy smelting, in particular to a method for co-producing ferrovanadium and calcium aluminate cement. Background technique

[0002] There are two smelting processes for ferrovanadium, namely aluminothermic reduction and silicothermal reduction. At present, aluminothermic reduction is generally used to produce ferrovanadium. The smelting equipment adopts a straight tube furnace, and the smelting of ferro-vanadium adopts a one-step ferro-vanadium smelting process, that is, each smelting furnace needs to be replaced once with a knotted combined straight tube furnace body and the furnace body is prepared offline. The vanadium-iron alloy liquid and molten slag obtained from smelting are separated by natural sedimentation after being cooled off-line in the furnace, and the smelting output of a single furnace is about 3 tons.

[0003] At present, magnesia is generally used as the knotting material in the furna...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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