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Method for comprehensively utilizing vanadium-containing slag steel slag iron and titanium concentrate

A technology of titanium concentrate and steel slag, which is applied in the field of comprehensive utilization of waste, can solve the problems of waste, large heat energy loss and high temperature, and achieve the effects of saving energy, preventing the collapse of the charge and enriching the heat source.

Pending Publication Date: 2021-12-03
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using a submerged arc furnace to smelt titanium concentrate, it is necessary to reduce the iron resources in the titanium concentrate to pig iron with a reducing agent. The smelting temperature is 1650-1750°C. The temperature is high, the heat loss is large and the waste is serious.

Method used

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  • Method for comprehensively utilizing vanadium-containing slag steel slag iron and titanium concentrate
  • Method for comprehensively utilizing vanadium-containing slag steel slag iron and titanium concentrate
  • Method for comprehensively utilizing vanadium-containing slag steel slag iron and titanium concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0031] This example provides a method for comprehensive utilization of vanadium-containing slag steel slag iron and titanium concentrate, such as Figure 1-5 shown, including the following steps:

[0032] Put vanadium-containing slag, steel slag iron and titanium concentrate into the submerged arc furnace, add reducing agent for smelting, adjust the slag with titanium concentrate or reducing agent in the later stage of smelting, heat up the furnace, mix the slag and iron into the slag car, and wait for the slag After condensing, open the taphole at the bottom of the slag car, pour the iron into iron ingots, and after the titanium slag is cooled, use crushing and screening equipment to process it into acid-melt titanium slag and pack it into the warehouse;

[0033] Among them, the submerged arc furnace is a small submerged arc furnace of 1800kva, and the electrodes of the submerged arc furnace are self-baking electrodes of φ470~500; , sampling, observation, etc.; the submerged...

Embodiment 2

[0047] The difference between this example and Example 1 is only: the furnace bottom material is equipped with 10kg of vanadium-containing slag steel slag iron according to 100kg of titanium concentrate, and 20kg of anthracite is added; the furnace cover material is equipped with 10kg of vanadium-containing Slag steel slag iron, add 10kg of anthracite, add 10kg of asphalt; the rest of the steps and parameters are the same.

Embodiment 3

[0049] The difference between this example and Example 1 is only that: the furnace bottom material is equipped with 5kg of vanadium-containing slag steel slag iron according to 100kg of titanium concentrate, and 20kg of anthracite is added; the furnace cover material is equipped with 20kg of vanadium-containing Slag steel slag iron, add 10kg of anthracite, add 10kg of asphalt; the rest of the steps and parameters are the same.

[0050] In summary, the invention provides a method for comprehensive utilization of vanadium-containing slag steel slag iron and titanium concentrate, the titanium concentrate (initial component of titanium concentrate: 45%≤TiO 2 ≤53%, 32.0%≤TFe≤40.0%) smelted into acid-soluble titanium slag (acid-soluble titanium slag product composition: 75%≤TiO 2 ≤80%), add reducing agent (such as reduced iron oxide) and asphalt as binder (to prevent the collapse of the charge and save energy), the melting temperature is 1650-1700 ° C, and the heat source is abundan...

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Abstract

The invention discloses a method for comprehensively utilizing vanadium-containing slag steel slag iron and titanium concentrate. The method comprises the following steps: adding vanadium-containing slag steel slag iron and titanium concentrate into a submerged arc furnace; adding a reducing agent for smelting; regulating slags through the titanium concentrate or the reducing agent in the later period of smelting; heating and discharging; mixing the slag iron to a slag car; and after the slags are condensed, opening an iron outlet in the bottom of the slag car; pouring iron into iron ingots; and after titanium slags are cooled, treating the titanium slags into acid-melting titanium slag products through crushing and screening equipment, and packaging and warehousing the acid-melting titanium slag products.

Description

technical field [0001] The invention relates to the technical field of waste comprehensive utilization methods, in particular to a method for comprehensive utilization of vanadium-containing slag, steel slag, iron and titanium concentrate. Background technique [0002] The Panxi area has a large amount of vanadium-titanium-magnetite resources. Vanadium is a precious metal resource. During the process of steelmaking and ironmaking, some vanadium resources enter the slag to form vanadium-containing slag steel slag iron, which makes recovery difficult. Titanium exists in the form of titanium concentrate, which is used to produce titanium dioxide after enriching titanium into high-titanium slag or acid-soluble titanium slag by means of submerged arc furnace smelting. When using a submerged arc furnace to smelt titanium concentrate, it is necessary to reduce the iron resources in the titanium concentrate to pig iron with a reducing agent. The smelting temperature is 1650-1750°C, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/12B22D7/00C22B1/244C22B34/12
CPCC21B13/12C21B13/006B22D7/00C22B1/244C22B34/1209C21B13/0013
Inventor 邓大军周登科钱强范泽宇张入元
Owner PANZHIHUA GANGCHENG GROUP