CN1126765A

CN1126765A - Composite carbon-iron alloy block and its prodn process

Info

Publication number: CN1126765A
Application number: CN 95100115
Authority: CN
Inventors: 王金忠; 王嵩; 王峰; 张夏弟; 李宝清
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-14
Filing date: 1995-01-14
Publication date: 1996-07-17

Abstract

The composite carbon-iron alloy block is produced with ferroalloy, carbon powder, dispersant, dissolving accelerator and adhesive as raw material and through crushing, material surface treatment, mixing, compact pressing and sintering processes. The said carbon-iron alloy block has obvious carbon-increasing and deoxidation effect and it is suitable for metallurgical industry and esp for steel smelting process.

Description

Composite carbon-iron alloy block and production method thereof

The present invention relates to the addition material of carburetting deoxidation in a kind of process for making process.

In metallurgical furnace or in ladle, be extensive use of at present and add coke powder or carbon granules comes this method of carburetting, the shortcoming of this method is that recovery rate is low, unstable again, fluctuation range is very big, environmental pollution is serious, can not guarantee the requirement of the Chemical Composition of the steel produced to carbon, therefore causes waste product and changes steel grade, influence turnout, addressing this problem becomes urgent need.

Task of the present invention is: provide a kind of carburetting recovery rate height, composite carbon-iron alloy block that carburetting is reliable and stable, environmental pollution is little and production method thereof.

Task of the present invention realizes as follows: adopting each composition weight percent of prescription is iron 61%, carbon 34%, be equipped with quick-dissolving agent 1%, dispersion agent 1.5%, binding agent 2.5%, above-mentioned composition is crushed to below-2 millimeters, to material surface treatment in addition, be mixed with blender, then pressed compact moulding and sintering.

Its manufacture craft is:

(1), with crusher with raw material pulverizing to below-2 millimeters;

(2), to its surface treatment in addition, make material expose unsalted surface;

(3), press the total amount of iron alloy, quick-dissolving agent, dispersion agent and binding agent and the proper ratio batching of carbon by one group of oscillating feeder;

(4), with mixer the material for preparing is mixed;

(5) be under the condition of 1210 kg/cm the material that is mixed to be pressed into base at pressure with special-purpose harder;

(6), under 90 ° of-150 ℃ of conditions sintering 60 minutes, just become qualified product.

Adopt prescription of the present invention and explained hereafter carbon-iron alloy block to have following advantage:

(1) composition is easy to control, constant product quality, (C＞30%, P＜0.1%, S＜0.1%, Si＜3.0%, H ₂O＜1.0%);

(2), the carbon-iron alloy bulk strength height produced, the surface is regular, proportion is suitable, is easy to transportation, is applicable to that process for making uses, and has also simplified addition manner simultaneously, has saved the energy, has reduced environmental pollution.

(3), the starting material wide material sources, production technique is simple, the yield rate height, cost is low.

Fig. 1 is a composite carbon-iron alloy block viewgraph of cross-section of the present invention;

Fig. 2 is composite carbon-iron alloy block technological process of production figure;

A preferred forms of the present invention, to manufacture the 1000Kg carbon-iron alloy block is example, the batching of selecting for use is iron 610Kg, carbon 340Kg, quick-dissolving agent 10Kg, dispersion agent 15Kg, binding agent 25Kg, with above-mentioned each raw material pulverizing to below-2 millimeters, then to its surface treatment in addition, make material expose unsalted surface, press iron alloy by one group of oscillating feeder then, quick-dissolving agent, the total amount of dispersion agent and binding agent and the ratio of carbon batching, with mixer the material for preparing is mixed, be under the condition of 1210 kg/cm the material that is mixed to be pressed into base at pressure by special-purpose harder, sintering just became qualified product in 60 minutes under 90 ° of-150 ℃ of conditions at last.

Claims

1, a kind of steel-making carburetting deoxidation addition material composite carbon-iron alloy block, it is characterized in that: hundred parts of ratios of the weight of each composition are: iron powder (iron-holder is more than 95%) 61%, carbon C (carbon content 95%) 34%, quick-dissolving agent (sodium-chlor) 1%, dispersion agent (calcium chloride) 1.5%, binding agent (going back the hydrogen resin) 2.5%.

2, a kind of manufacture method of composite carbon-iron alloy block as claimed in claim 1 is characterized in that:

A, with above-mentioned each raw material pulverizing to below-2 millimeters, and, make material expose unsalted surface to its in addition surface treatment;

B, the material for preparing is mixed with mixer;

C, be under the condition of 1210 kg/cm the material that is mixed to be pressed into base by special-purpose harder at pressure;

D, sintering just became qualified product in 60 minutes under 90 °-150 ℃ condition.