CN102276190A - Method for producing sintered hollow bricks by utilizing waste residues of graphite tailings - Google Patents
Method for producing sintered hollow bricks by utilizing waste residues of graphite tailings Download PDFInfo
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- CN102276190A CN102276190A CN2010102047057A CN201010204705A CN102276190A CN 102276190 A CN102276190 A CN 102276190A CN 2010102047057 A CN2010102047057 A CN 2010102047057A CN 201010204705 A CN201010204705 A CN 201010204705A CN 102276190 A CN102276190 A CN 102276190A
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- graphite
- waste residues
- waste residue
- brick
- tailing waste
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a method for producing sintered hollow bricks by utilizing waste residues of graphite tailings. The waste residues of the graphite tailings are industrial solid waste residues generated in a graphite ore mining and dressing production process, not only occupy a large amount of fertile farmland and soil, but also severely pollute the ambient environment. In the method, the waste residues of the graphite tailings are utilized to manufacture the hollow bricks, and the hollow bricks of which the doping amount of the waste residues of the graphite tailing is 80% can be manufactured through mixing the waste residues of the graphite tailings and the coal gangues by taking the coal gangues as a cementing agent through a traditional sintered brick production process, a vacuum extrusion molding method and the like. by using the method, not only can the effects of utilizing wastes, saving energy and increasing novel wall materials achieved, but also land saving and ecological environment friendliness can be realized and a better utilization approach is found for graphite tailings, and the method is a good method which can turn wastes into wealth, turns a disadvantage into an advantage and has an excellent popularization value.
Description
Technical field
The present invention relates to a kind of technical field of utilizing industrial ore deposit tail to produce sintered hollow block, refer to use graphite ore mine tailing waste residue to produce sintered hollow block especially.
Background technology
The Shandong Province is China graphite big producing province, graphite output ranks first in the country, but when producing graphite, also give off a large amount of industrial residue-graphite tailings, medium-sized graphite ore will discharge graphite tailing slag 30～500,000 ton every year, need constantly take the good soil in good farmland stacks, owing to never find the method for effectively utilizing, this waste residue is deposited more and more, so that become local a kind of disaster, not only take the good soil in good farmland, and contaminate environment.
1, the graphite ore mine tailing is in the graphite ore production process, to graphite ore pulverize, ball milling, fine grinding, and adopt technologies such as flotation, magnetic separation selected after the industrial solid castoff of discharging, after a large amount of water of general employing mixes with it, precipitate to the mine tailing slag dam by pipe-line transportation, this process is very similar to the wet method discharging flyash of power plant.Graphite tailing generally is the canescence finely powdered, and glittering in the sun graphite belongs to gloss, natural moisture content about 30%.The chemical ingredients of graphite ore mine tailing waste residue is mainly with SiO
2, Ai
2O
3, composition such as CaO is main, all the other also have a spot of Fe
2O
3, KaO and NaO etc., according to the difference of geologic condition, the chemical ingredients of graphite tailing has bigger fluctuation.
From the graphite ore chemical ingredients, the content of CaO is very high in its chemical ingredients, has exceeded the normal range that brick-making raw material allows, and key component SiO
2And AI
2O
3Content less than normal a lot, have only Fe
2O
3Be within the normal scope.Single from graphite tailing chemical ingredients, it is difficult being used for producing vitrified brick, we can say that also independent employing graphite ore mine tailing waste residue is to produce qualified vitrified brick, must mix other raw materials, adjust the chemical constitution of raw material, improve the physicals of raw material, make it reach the normal range of brick-making raw material requirement.
The production process of graphite ore mine tailing waste residue is through pulverizing, fine grinding by graphitiferous volcanic rock, form through washing again, therefore granulometric composition is thinner, and all below 1mm, the relative clay of graphite ore mine tailing is " rough sand " at last basically for its fineness, much also thicker than flyash, but the fineness of graphite ore mine tailing is for brick-making raw material, and is still more satisfactory, though being graphite ore mine tailing waste residue, reason itself do not have plasticity-, little to the plasticity influence of jointing compound
2, jointing compound
The illite coal gangue hopper of packing into is delivered to raw material processing factory building through conveyor, be processed into qualified material through beater grinder pulverizing, trommel screen or vibratory screening apparatus screening.It is most economical selecting coal gangue, and the coal gangue resource of Shandong Province is very abundant, and there are a large amount of coal gangue reserves in colliery, Longkou, Yantai City, Shandong.Coal gangue (illite) quality is light, and natural moisture content is very low, and outward appearance uses this coal gangue as " grey stone ", will drive the native energy conservation of local joint undoubtedly, kills two birds with one stone.
The main multi mineral of coal gangue (illite) is formed, and sheet structure is easily pulverized.From mineral content, this coal gangue belongs to bandy clay character rock, is the good raw material of brickmaking.
Summary of the invention
Mix graphite ore mine tailing waste residue with bastard coal masonry jointing compound and produce sintered hollow block, have good realistic meanings, not only meet the relevant policies of national walling innovation, and economize the land resource and preserve the ecological environment.Moreover, graphite ore mine tailing waste residue mixed produce sintered hollow block in the coal gangue, can also utilize the heat and the sophisticated production technology of heavy clay industry of coal gangue self and produce equipment, make it to obtain the effect of getting twice the result with half the effort.Graphite ore mine tailing waste residue does not have plasticity, and volume is big more, and the plasticity of compound is low more, and moulding is difficult more, can adopt fine grinding process, and adopts the two-stage vacuum forcing machine moulding of extrusion pressure greater than 3.0 MPas, is the good method that improves Forming Quality.
Graphite ore mine tailing waste residue is produced sintered hollow block, the proportioning of coal gangue and graphite tailing: 20/80, and plasticity index 5.6 always shrinks 7.89%, 980 ℃ of sintering temperatures, sintering time 30 hours.
To achieve these goals, technical solution of the present invention is: the first step, coal gangue is added jaw crusher carry out fragmentation, be transported to hammer mill together with graphite ore mine tailing waste residue with rotary conveyor and carry out secondary breaking, carry out mixing in small, broken bits entering ball mill and high speed twin rollers in small, broken bits, compound is inserted biaxial rneader (adding suitable quantity of water) stir; Second step, with compound with rotary conveyor deliver to brick extruding machine through last stirring, vacuumize, be stirred in the hollow mould mouth down and extrude, and automatically slitting, cut base; In the 3rd step, the hollow brick blank that cuts is put field discharge neat dryness in the sun; The 4th step, adopt wheel kiln baking, within 900 ℃～1000 ℃ scopes, sintering time was chilled to naturally near normal temperature after 30 hours, and kiln discharge is hollow brick.
Specific implementation method:
(1) preparation of raw material: coal gangue is added jaw crusher carry out fragmentation, be transported to hammer mill together with graphite ore mine tailing waste residue with rotary conveyor and carry out secondary breaking, enter ball mill and high speed twin rollers in small, broken bits again and carry out mixing in small, broken bits, make granularity reach micro mist about 10um--40um, to increase plasticity-, compound is inserted biaxial rneader (adding suitable quantity of water) stir standby;
(2), moulding: compound is delivered to the two-stage vacuum forcing machine with rotary conveyor, through last stirring, vacuumize, stir down and extrude from hollow brick mould mouth, and automatically slitting, cut base; Make the adobe work in-process.
(3), drying: graphite ore mine tailing waste residue is good leaning agent in adobe, has the effect of anti-contraction, cracking resistance, and therefore, adobe only needs at normal temperatures, just can seasoning.
(4), roasting: adopt wheel kiln baking, maturing temperature generally within 900 ℃～1000 ℃ scopes, sintering time 30 hours, sintering method and ordinary fired brick are basic identical, after roasting finishes, the nature annular kiln are chilled near normal temperature, just can kiln discharge.
Kiln such as common annular kiln, tunnel furnace can be fired graphite ore mine tailing waste residue sintered hollow block in the Bricks and Tiles Plant.
The above; practical ways only is that preferred implementation of the present invention is described; be not that scope of the present invention is limited; under the prerequisite of the spirit that does not break away from the technology of the present invention; various distortion and improvement that this area engineering technical personnel make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. the graphite tailing waste residue is produced the method for sintered hollow block, be the graphite tailing waste residue will with coal gangue with ball mill and high speed twin rollers in small, broken bits micro mist to 10um--40um in small, broken bits.Add an amount of water then, compound is stirred on brick extruding machine by rotary conveyor extrude half product adobe, behind the brick bat drying, put into closed kiln sintering, 900 ℃ of sintering temperatures--1000 ℃, sintering is after 30 hours, make its naturally cooling, when reaching, can become finished product by kiln discharge near normal temperature.
2. graphite tailing waste residue according to claim 1 is produced the method for sintered hollow block, manufacture the hollow brick that can shape as requested differs in size, watt, multiple product such as pavior brick.
3. graphite tailing waste residue according to claim 1 is produced the method for sintered hollow block, and it comprises following processing step:
(1), preparation of raw material: coal gangue carries out just pulverizing with jaw crusher, again with rotary conveyor and graphite tailing waste residue ratio in 20: 80, deliver to hammer mill mixing pulverizer together and mix pulverizing, again through in small, broken bits with ball mill and high speed twin rollers in small, broken bits, enter biaxial rneader (adding suitable quantity of water) and carry out raw material stirring, finish preparation of raw material.
(2), moulding: compound is transported on the brick extruding machine with rotary conveyor, extrudes through stirring, vacuumize, to stir down and extrude, mould (extrusion), slitting, cut base, make the adobe work in-process.
(3), drying: the graphite tailing waste residue is good leaning agent in adobe, has the effect of anti-contraction, cracking resistance, and adobe only needs at normal temperatures, just can finish drying naturally.
(4), roasting: adopt wheel kiln baking, maturing temperature generally within 900 ℃～1000 ℃ scopes, sintering time 30 hours, sintering method and ordinary fired brick are basic identical, after roasting finishes, the nature annular kiln is chilled near normal temperature, just can becomes qualified products such as hollow brick by kiln discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102047057A CN102276190A (en) | 2010-06-08 | 2010-06-08 | Method for producing sintered hollow bricks by utilizing waste residues of graphite tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102047057A CN102276190A (en) | 2010-06-08 | 2010-06-08 | Method for producing sintered hollow bricks by utilizing waste residues of graphite tailings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102276190A true CN102276190A (en) | 2011-12-14 |
Family
ID=45101987
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102047057A Pending CN102276190A (en) | 2010-06-08 | 2010-06-08 | Method for producing sintered hollow bricks by utilizing waste residues of graphite tailings |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128353A (en) * | 2014-07-27 | 2014-11-05 | 许盛英 | Acidified graphite tailings |
| CN104150861A (en) * | 2014-07-29 | 2014-11-19 | 南京钢铁股份有限公司 | Sintered brick and preparation method thereof |
| CN110436939A (en) * | 2019-08-28 | 2019-11-12 | 洛阳北玻硅巢技术有限公司 | A kind of dry preparation process of graphite tailing base foaming wall building block |
| CN111268967A (en) * | 2020-02-11 | 2020-06-12 | 青岛吉翔通装备科技有限公司 | Concrete pavement brick prepared from graphite slag and preparation method thereof |
-
2010
- 2010-06-08 CN CN2010102047057A patent/CN102276190A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128353A (en) * | 2014-07-27 | 2014-11-05 | 许盛英 | Acidified graphite tailings |
| CN104128353B (en) * | 2014-07-27 | 2016-06-08 | 许盛英 | Graphite tailing after acidifying |
| CN104150861A (en) * | 2014-07-29 | 2014-11-19 | 南京钢铁股份有限公司 | Sintered brick and preparation method thereof |
| CN104150861B (en) * | 2014-07-29 | 2016-06-29 | 南京钢铁股份有限公司 | A kind of fired brick and preparation method thereof |
| CN110436939A (en) * | 2019-08-28 | 2019-11-12 | 洛阳北玻硅巢技术有限公司 | A kind of dry preparation process of graphite tailing base foaming wall building block |
| CN111268967A (en) * | 2020-02-11 | 2020-06-12 | 青岛吉翔通装备科技有限公司 | Concrete pavement brick prepared from graphite slag and preparation method thereof |
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| PB01 | Publication | ||
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Application publication date: 20111214 |