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Oxide briquetting used for steelmaking alloy element and preparation method thereof

A technology for steel-making alloying and alloying elements, applied in the field of steel-making alloying agents, can solve problems such as poor alloying effect of molten steel, and achieve the effects of simple production process, low pollution and low energy consumption

Inactive Publication Date: 2008-08-13
谢应旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the added briquettes do not contain deoxidizing elements, these oxides are rarely reduced, resulting in poor alloying effect of molten steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Preparation of niobium-titanium-vanadium oxide briquettes for alloying X60 pipeline steel.

[0020] Raw material selection and ratio selection: niobium oxide (including Nb 2 o 5 98.5%) 25kg, vanadium pentoxide (containing V 2 o 5 93%) 50kg, titanium concentrate (containing TiO 2 50%) 25kg. After pulverizing and sieving the above materials, take the part with a particle size of ≤0.15mm. Mix an appropriate amount of water glass as a binder and 10 kg of reducing agent aluminum particles (0.1-1 mm in size) with the above-mentioned materials with a mixer. It is pressed into shape with a 100-ton friction press. Its specification: 70mm×70mm×70mm cube, density: 4.7g / cm 3 . Naturally air-dried for 24 hours, put into a drying oven at a temperature of about 300°C, and dry. The moisture content should be less than 5%, and it should be packaged for storage.

[0021] X60 pipeline steel is produced in a 150T electric furnace, and the product of Example 1 is added ...

Embodiment 2

[0022] Example 2: Preparation of chromium molybdenum oxide compacts for alloying of chromium molybdenum steel.

[0023] Raw material selection and proportioning: take chromium ore containing (Cr 2 o 3 41%) 70kg; , the product 20Kg after roasting molybdenum concentrate containing 75% MoS. The chromium ore and the roasted product are crushed and sieved, mixed with 10 kg of ferrosilicon powder (containing 75% Si) and 6 kg of pulp, and then pressed into a cylindrical shape with a diameter of 90 mm and a height of 70 mm. After natural air-drying for 24 hours, it is dried in an oven at a temperature of about 400°C. As a result, the moisture content is ≤5%, and the density is: 6.1g / cm 3 of briquetting.

[0024] The production of chromium molybdenum steel (Cr 14 Mo), add 5.5T of the product of this embodiment into each furnace during the reduction period, and as a result, the chemical components of the molten steel are all qualified, and the mechanical properties reach the requir...

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PUM

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Abstract

The invention discloses an oxide briquetting for steelmaking alloying elements, which includes oxide(s) and reducer(s) containing alloying elements, wherein the oxide(s) is / are one or more than one selected from oxides of chromium, molybdenum, vanadium, tungsten, titanium, nickel, boron, niobium, zirconium and cerium, the reducer(s) is / one or two selected from appropriate carbon, silicon and aluminum. The manufacturing method is adding appropriate reducer and binder to the steelmaking alloying elements oxide powder, mixing the reducer and binder in proportion, press forming, and drying. The invention solves the problems of complicated process, high energy consumption, high pollution and resource waste, which are problems of current iron alloy for steelmaking, at the same time, solves the problem of low utilization rate when the current alloying elements oxide is used as alloying addition.

Description

technical field [0001] The invention relates to a steelmaking alloying agent, in particular to an oxide briquette of steelmaking alloying elements, and also relates to a preparation method of the oxide briquette. Background technique [0002] Steel contains different alloying elements, so that the steel has different properties. Commonly used alloying elements are chromium, molybdenum, vanadium, tungsten, titanium, cobalt, nickel, boron, niobium, zirconium and so on. In order to obtain these alloy elements, the raw materials containing these elements are smelted into iron alloys containing the above elements by blast furnace method, electric furnace method, metallothermal method and other methods. But no matter what method is used for production, the process is complicated, and high energy consumption, high pollution, waste of resources, thereby reducing the economic benefits of the steelmaking industry. The prior art also records that alloyed oxide briquettes are used for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00
Inventor 谢应旭
Owner 谢应旭
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