CN104099473A

CN104099473A - Technological method for extraction of silicon-aluminum-iron-titanium alloy from pyrite slag

Info

Publication number: CN104099473A
Application number: CN201310112723.6A
Authority: CN
Inventors: 严铂鑫; 严瑞山
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2014-10-15

Abstract

The invention provides a technological method for extraction of silicon-aluminum-iron-titanium alloy from pyrite slag. The method includes: crushing the pyrite slag to a particle size of less than 1mm, mixing the crushed pyrite slag with a carbon-containing material with a particle size of less than 0.5mm according to a proportion of 100%:60-30%, then adding a composite binder accounting for 3-20% of the total amount of the materials and stirring them evenly, sending the uniformly mixed material into a ball press machine to be pressed into pellets of certain size, then sending the pellets into a belt drier to undergo drying at 150DEG C for 2-4h to obtain pyrite slag pellets with cold strength of greater than or equal to 900N/ball, hot strength of greater than or equal to 600N/ball and a water content of less than or equal to 1%, then sending the pyrite slag pellets into a reduction device with a high temperature of higher than or equal to 2200DEG C to undergo high temperature reduction for more than 3h so as to be reduced into the silicon-aluminum-iron-titanium alloy with a total metal content of more than or equal to 75%, and carrying out tundish transportation molding to obtain a silicon-aluminum-iron-titanium alloy ingot. Thus, the method is conducive to large-scale treatment and utilization of pyrite slag.

Description

Pyrite slag extracts the processing method of ferrosilicoaluminum titanium alloy

Technical field

The present invention relates to the technical field that a kind of pyrite slag extracts ferrosilicoaluminum titanium alloy, particularly pyrite slag extracts the processing method of ferrosilicoaluminum titanium alloy.

Background technology

Most domestic pyrite slag is as a kind of trade waste, there is very strong pollution power, particularly to underground water, soil, the pollution of air, although various places have adopted the method Extraction parts metal that ferro element is wherein extracted or adopted hydrometallurgy, but still leaving most waste residue does not utilize, the patent No. 92108895.7 composition for prodn. of brick from pyrite slags, the patent No. 95103738.2 pyrite slag mortar product and manufacture method thereof, the patent No. 02220545.4 utilizes pyrite slag to produce the device of iron oxide pigment, mono-kind of patent No. 200710192349.X improves the method for iron content in pyrite slag, the patent No. 201110071928.5 adopts flyash and pyrite slag to produce the preparation method of efficient solidifying wadding agent, the processing and utilizing about pyrite slag that these patents are introduced is also halfway.

Summary of the invention

The object of this invention is to provide the processing method that a kind of pyrite slag extracts ferrosilicoaluminum titanium alloy.Pyrite slag is broken for to 1 millimeter of following granularity, mix according to 100%:60-30% ratio with the carbonaceous material that is broken for 0.5 millimeter of following granularity, the compound binding agent of the total amount that adds materials again 3-20% stirs, the material mixing is sent into ball press, be pressed into the pelletizing of certain size, then pelletizing being sent into temperature is 150 DEG C, time is dry in the conveyor dryer of 2-4 hour, become cold strength >=900N/ ball, hot strength >=600N/ ball, the artificial pyrite slag pelletizing of moisture≤1%, finally send in the reducer of high temperature >=2200 DEG C, through the high temperature reduction of 3-4 hour, pyrite slag pelletizing is reduced to the ferrosilicoaluminum titanium alloy of total metal content >=75%, have bad luck mold through tundish, become consistent size, the ferrosilicoaluminum titanium alloy ingot that shape is identical, thereby be beneficial to extensive processing and utilizing pyrite slag and obtain good economic benefit.

The present invention is achieved by the following technical solutions:

Pyrite slag of the present invention extracts the process of the processing method of ferrosilicoaluminum titanium alloy, by fragmentation, feed, mix and blend, compression moulding, be dried and operation and electric control operation system, fly-ash separator, flue gas and the water treatment device etc. such as high temperature reduction form.

The concrete steps that pyrite slag of the present invention extracts the processing method of ferrosilicoaluminum titanium alloy comprise:

(1) raw material preparation: pyrite slag, its SiO ₂content>=30%, Al ₂o ₃content>=20%, Fe ₂o ₃content>=25%, TiO content>=1%, particle size reduction is≤1mm; Carbonaceous material can use coke, charcoal, hard coal, bituminous coal, biomass, pitch etc., its ash content≤10%, and volatile matter≤8-40%, carbon content>=50%, particle size reduction is≤0.5mm; The compound binding agent being formed by inorganics and organism, inorganics can use sodium silicate and particle size reduction to be≤wilkinite of 0.25mm, alum clay, kaolin, flyash etc., and organism can use the wood pulp for preparing, starch, vinasse, spent pulping liquor, macromolecular compound etc.; Three class materials are according to 100%: 10-60%: 1-30% ratio mixing and stirring, and as the pan feeding raw material of ball press.

(2) manufacture pyrite slag pelletizing: the material of mixing and stirring is sent in the pressure roller of two relative rotary motion of ball press, material is pressed into the pelletizing of 50 × 50 × 30mm size there, and the linear pressure of ball press sheeted product is≤20KN/cm; It is in the conveyor dryer of 150 DEG C that the pelletizing suppressing is sent into temperature, and dry through 2-4 hour becomes the pyrite slag pelletizing of cold strength >=900N/ ball, hot strength >=600N/ ball, moisture≤1%.

(3) high temperature reduction extracts ferrosilicoaluminum titanium alloy: pyrite slag pelletizing is sent in the reducer of high temperature >=2200 DEG C, through the high temperature reduction of 3-4 hour, pyrite slag pelletizing is reduced to the ferrosilicoaluminum titanium alloy of total metal content >=75%, have bad luck mold through tundish, become the ferrosilicoaluminum titanium alloy ingot that consistent size shape is identical.

Advantage of the present invention:

Pyrite slag of the present invention extracts the processing method of ferrosilicoaluminum titanium alloy, can make after pyrite slag and carbonaceous material fragmentation, mix by a certain percentage, adding compound binding agent stirs, sending into ball press is pressed into pelletizing and is dried, finally send in the reducer of high temperature >=2200 DEG C, through the high temperature reduction of 3-4 hour, pyrite slag pelletizing is reduced to the ferrosilicoaluminum titanium alloy of total metal content >=75%, have bad luck mold through tundish, become the ferrosilicoaluminum titanium alloy ingot that consistent size shape is identical, owing to adopting high temperature reduction to extract ferrosilicoaluminum titanium alloy without slag, so do not have unnecessary pyrite slag to retain, widen the processing and utilizing scope of pyrite slag, for pyrite slag is in conglomerate, multi-field utilization provides Reliable guarantee.

The ferrosilicoaluminum titanium alloy that the present invention makes, is applied to metallurgy industry, can be used as the reductor of smelting iron and steel, can well improve the inner quality of steel; Can replace ferrosilicon to produce for MAGNESIUM METAL as reductive agent, thereby rate is collected in the reduction of the reduction temperature of reduction MAGNESIUM METAL, raising magnesium; Can also increase later stage iron removal step, obtain the sial titanium alloy that quality is higher, for fields such as automobile, navigation, aviation, railways, make relevant enterprise obtain good economic benefit.

Embodiment

Below by embodiment, content of the present invention is described further.

Embodiment:

SiO ₂content>=30%, Al ₂o ₃content>=20%, Fe ₂o ₃content>=25%, the pyrite slag of TiO content>=1% is sent into pyrite slag crusher, sends into powdery pyrite slag feed bin after being crushed to granularity≤1mm, under feed bin, disposes feeding machine; Carbonaceous material hard coal, its ash content≤15%, volatile matter≤8%, carbon content>=50%, particle size reduction is sent into powdered anthracite feed bin for after≤0.5mm, disposes feeding machine under feed bin; Carbonaceous material bituminous coal, its ash content≤5%, volatile matter≤40%, carbon content>=50%, particle size reduction is sent into powdery bituminous coal feed bin for after≤0.5mm, disposes feeding machine under feed bin; Carbonaceous material charcoal, its ash content≤10%, volatile matter≤10%, carbon content>=70%, particle size reduction is sent into powdery charcoal feed bin for after≤0.5mm, disposes feeding machine under feed bin; Kaolin particle size reduction is sent into powdery kaolin storage bin for after≤0.25mm, disposes feeding machine under feed bin; The flue dust of disintegrating apparatus is purified recovery by fly-ash separator in the configuration of crusher working position; The spent pulping liquor preparing injects storage tank, joins with under meter; Above material is according to pyrite slag and carbonaceous material 100%: 60-30% ratio, and the analysis data of the material that accurate proportioning need to be used according to reality is determined; The compound binding agent of the total amount that adds materials again 3-20%, sends in two sections of mixing and blending machines kneading even, as the pan feeding raw material of ball press; The material of mixing and stirring is sent in the pressure roller of two relative rotary motion of ball press, material is pressed into the pelletizing of 50 × 50 × 30mm size there, and the linear pressure of ball press sheeted product is>=50KN/cm; Material after ball press compacting is by screening, particle turns back to second segment mixing and blending machine, it is in the conveyor dryer of 150 DEG C that the pelletizing suppressing is sent into temperature, and dry through 2-4 hour becomes the pyrite slag pelletizing of cold strength>=900N/ ball, hot strength>=600N/ ball, moisture≤1%; Finally pyrite slag pelletizing is sent in the reducer of high temperature>=2200 DEG C, through the high temperature reduction of 3-4 hour, pyrite slag pelletizing is reduced to the ferrosilicoaluminum titanium alloy of total metal content>=75%, has bad luck mold through tundish, becomes consistent size, ferrosilicoaluminum titanium alloy ingot that shape is identical; At flue gas and the water treatment device of this working position configuration, flue gas and cooling water during by high temperature reduction are processed, purify, are reclaimed, and reach pollution-free; The electric control operation system of configuration is implemented to adjust and control safely and effectively to whole technological process.

Claims

1. the processing method of a pyrite slag extraction ferrosilicoaluminum titanium alloy, it is characterized in that: pyrite slag is broken for to 1 millimeter of following granularity, with the carbonaceous material that is broken for 0.5 millimeter of following granularity according to 100%: 60-30% ratio is mixed, the compound binding agent of the total amount that adds materials again 3-20% stirs, the material mixing is sent into ball press, be pressed into the pelletizing that is of a size of 50 × 50 × 30mm, then pelletizing being sent into temperature is 150 DEG C, time is dry in the conveyor dryer of 2-4 hour, become cold strength >=900N/ ball, hot strength >=600N/ ball, the pyrite slag pelletizing of moisture≤1%, finally send in the reducer of high temperature >=2200 DEG C, through the high temperature reduction of 3-4 hour, pyrite slag pelletizing is reduced to the ferrosilicoaluminum titanium alloy of total metal content >=75%, have bad luck mold through tundish, become the ferrosilicoaluminum titanium alloy ingot that shape is identical.

2. pyrite slag according to claim 1 extracts the processing method of ferrosilicoaluminum titanium alloy, it is characterized in that: carbonaceous material is coke, charcoal, hard coal, bituminous coal, biomass, pitch etc., its ash content≤10%, volatile matter≤8-40%, carbon content >=50%, particle size reduction is≤0.5mm.

3. pyrite slag according to claim 1 extracts the processing method of ferrosilicoaluminum titanium alloy, it is characterized in that: the compound binding agent of inorganics and organism composition, inorganics is that sodium silicate and particle size reduction are≤wilkinite of 0.25mm, alum clay, kaolin, flyash, and organism is wood pulp, starch, vinasse, spent pulping liquor, the macromolecular compound preparing.

4. pyrite slag according to claim 1 extracts the processing method of ferrosilicoaluminum titanium alloy, it is characterized in that: the ratio of three class materials is pyrite slag 100%: carbonaceous material 10-60%: compound binding agent 1-30%.

5. pyrite slag according to claim 1 extracts the processing method of ferrosilicoaluminum titanium alloy, it is characterized in that: the linear pressure of ball press sheeted product is >=50KN/cm.

6. pyrite slag according to claim 1 extracts the processing method of ferrosilicoaluminum titanium alloy, it is characterized in that: the temperature of high temperature reduction device is >=2200 DEG C.