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Method for smelting tungsten-molybdenum-iron alloy from tungsten-molybdenum associated mineral

A technology for associated ore and ferroalloy, applied in the field of tungsten-molybdenum associated ore smelting tungsten-molybdenum ferroalloy, can solve problems such as difficulty in realizing mass production and smelting scale limitation, and achieve the effect of comprehensive utilization of resources, saving cost of raw materials and ensuring product quality

Inactive Publication Date: 2017-04-26
SONGXIAN EXPLOITER MOLYBDENUM
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Problems solved by technology

However, the vacuum smelting treatment of tungsten and molybdenum associated ore, the smelting scale is limited by the equipment, it is difficult to achieve industrialized mass production

Method used

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  • Method for smelting tungsten-molybdenum-iron alloy from tungsten-molybdenum associated mineral

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Embodiment Construction

[0030] The present invention will be further described below through specific examples. In the present invention, unless otherwise specified, the content of each component represents the content of mass percentage.

[0031] The composition of tungsten and molybdenum associated ore used in the examples is shown in Table 2. The melting point of steel scrap composition is 1520°C, and it contains 0.15% carbon, 0.015% P and 0.015% S. Among the carbonaceous reducing agents used, the fixed carbon is 85%, the volatile matter is 8%, and the ash content is 6%. The binder is an organic binder, and the amount of the binder is 3%. Formed with a ball press. The dryer adopts an electric drying box. The capacity of the induction heating furnace is 5 tons, and it is protected by nitrogen gas, and the flow rate of nitrogen gas is 0.1~1m 3 / min.

[0032] Chemical composition (%) of tungsten and molybdenum associated ore in the embodiment of table 2

[0033] WO 3

MoO 3

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Abstract

The invention relates to the technical field of comprehensive utilization of a tungsten-molybdenum associated mineral, in particular to a method for smelting a tungsten-molybdenum-iron alloy from the tungsten-molybdenum associated mineral. The method includes the steps that firstly, the tungsten-molybdenum associated mineral, a carbonaceous reducing agent and a binding agent are evenly mixed and formed according to a certain ratio, the dried mixed material and waste steel are placed in an induction heating furnace according to a certain ratio to be subjected to high-temperature reduction, the tungsten-molybdenum-iron alloy is obtained, and P in the mineral continues to be left in the mineral. The method has the beneficial effects of being large in processing capacity, good in product quality, low in energy consumption, low in pollution, low in production cost, and the like.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of tungsten-molybdenum associated ore, in particular to a method for smelting tungsten-molybdenum-iron alloy with tungsten-molybdenum associated ore. Background technique [0002] The associated ore of tungsten and molybdenum mainly comes from the beneficiation process of molybdenum concentrate. Only the Luanchuan area of ​​Henan produces more than 30,000 tons of associated ore of tungsten and molybdenum every year. The ore mainly contains calcium tungstate, calcium molybdate, calcium fluorophosphate, etc., and its chemical composition is as follows: Table 1 shows. Phosphorus content in tungsten-molybdenum associated ore is relatively high, and it exists in the ore in the form of difficult-to-reduce calcium fluorophosphate. It is difficult to remove phosphorus, and at the same time, the content of tungsten and molybdenum is relatively low, and there are many other impurity eleme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/242C22C33/04C22C38/12C05B5/00C05G1/00
CPCC05B5/00C05G1/00C22B1/242C22C33/04C22C38/12Y02P10/20
Inventor 赵维根郭培民罗林根
Owner SONGXIAN EXPLOITER MOLYBDENUM
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