CN203874873U - Nickel slag grinding system - Google Patents

Nickel slag grinding system Download PDF

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Publication number
CN203874873U
CN203874873U CN201420246624.7U CN201420246624U CN203874873U CN 203874873 U CN203874873 U CN 203874873U CN 201420246624 U CN201420246624 U CN 201420246624U CN 203874873 U CN203874873 U CN 203874873U
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China
Prior art keywords
nickel slag
nickel
discharging opening
vertical mill
type
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CN201420246624.7U
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Chinese (zh)
Inventor
石光
申占民
王庆利
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Sinoma (Tianjin) powder technology equipment Co., Ltd.
Tianjin Cement Industry Design and Research Institute Co Ltd
Original Assignee
Sinoma (tianjin) Powder Technology Equipment Co Ltd
Sinoma Technology and Equipment Group Co Ltd
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Priority to CN201420246624.7U priority Critical patent/CN203874873U/en
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Abstract

The utility model relates to a nickel slag grinding system. The nickel slag grinding system is characterized by mainly comprising a feeding bin, a quantitative feeding machine, a cylindrical grinding machine vibration screen, a belt conveyer, a strong magnetic separator, a nickel slag vertical mill, a dry-type magnetic separator, a bag-type deduster, a main exhaust fan and a hot blast heater system. Nickel slag with moisture less than 5% and granularity less than 60mm is sent into a cylindrical grinding machine for grinding, thereby obtaining more than 90% of fine powder with the granularity of below 5mm; after the fine powder is screen, iron separation is carried out by the strong magnetic separator; the nickel slag after iron separation in the vertical mill is dried and ground. Meanwhile, large particles containing iron are thrown out by a millstone, are then subjected to iron removal by the dry-type magnetic separator, and are fed into the mill again. Finally, nickel slag micro powder finished products with the specific surface area of 4200-4500cm<2>/g are obtained after circulation grinding for multiple times; the finished products passing through the bag-type deduster are conveyed into a finished product warehouse by air trough conveyers, and waste gas is discharged into atmosphere by virtue of a chimney. The nickel slag grinding system provided by the utility model is high in system output, high in grinding efficiency, low in using expense and running cost and obvious in electricity saving effect, and can be used for improving the economic benefit.

Description

A kind of nickel ground-slag grinding system
Technical field
The utility model belongs to resource recycling and environmental protection technical field, relates to nickel slag treatment technology in a kind of metallurgy industry, especially relates to a kind of nickel ground-slag grinding system and production technology thereof.
Background technology
One of main waste residue of Nie Zhashi dilval manufacturing enterprise, its discharge capacity is about 6-10 times of dilval output, estimate that the discharge capacity of China's nickel slag in 2015 is more than 100,000,000 tons, if do not process and fully utilize, nickel slag can take increasing soil, contaminated environment, cause the waste of resource, further affect the sustainable development of smelting ferronickel alloy industry.At present, processing method is that nickel sizing is thin effectively, then mixes in cement, as the composite material of construction material, uses.In prior art, nickel slag milling equipment is mainly to adopt gyratory crusher and ball mill, gyratory crusher is crushed to nickel slag after certain granularity, with ball mill, carry out last grinding operation again, but because grindability and the abrasion of nickel slag are all larger, cause the grinding pow consumption of ball mill high, up to 90 KWhs/ton of left and right, and production capacity is little, ball mill steel ball consumption is also large.
Summary of the invention
The utility model provides a kind of compact conformation for solving the technical problem existing in known technology, improves production capacity, reduces nickel ground-slag grinding system and the production technology thereof of energy consumption and wear extent.
The technical scheme that the utility model is taked for the technical problem existing in solution known technology is:
A kind of nickel ground-slag grinding system, it is characterized in that: this system mainly comprises feeding bin, below feeding bin, be provided with constant feeder, the discharging opening of constant feeder is positioned at the charging aperture of column mill top, the discharging opening below of described column mill bottom is provided with vibratory sieve, the below of vibratory sieve discharging opening is provided with the first belt conveyor, is provided with the first permanent magnetism self-unloading type deferrization device at the top of the first belt conveyor; Below the discharging opening of the first belt conveyor, be provided with the first powerful magnetic separator, the below of described powerful magnetic separator is provided with the second belt conveyor, and the second permanent magnetism self-unloading type deferrization device is installed at the top of the second belt conveyor; The discharging opening below of described the second belt conveyor is provided with screw(-type) feeder, the discharging opening of screw(-type) feeder is provided with nickel slag Vertical Mill, described screw(-type) feeder top inlet is aimed at the port of export of the second belt conveyor, screw(-type) feeder bottom discharge mouth is aimed at nickel slag Vertical Mill inner cone center, and the slag-drip opening of described nickel slag Vertical Mill bottom is provided with lock wind weight unloading valve; At the other elevator that is provided with of nickel slag Vertical Mill; Between the charging aperture of described elevator and unloading valve, be provided with the 3rd belt type conveyer; The discharging opening of described elevator connects dry-type magnetic extractor, and the discharging opening of described dry-type magnetic extractor is provided with intermediate bin, and is connected with the charging aperture of intermediate bin; The feed opening of described intermediate bin connects the tremie pipe at nickel slag Vertical Mill top, and the product outlet at described nickel slag Vertical Mill top connects bag filter by pipeline; Described nickel slag Vertical Mill bottom connects nickel slag dries thermal source; The discharging opening below of described bag filter is provided with air conveyer flume, the discharging opening connecting conveying pipe road of bag filter, and described conveyance conduit is positioned at the top of air conveyer flume, and conveyance conduit is provided with weighted valve; The top of described air conveyer flume is provided with centrifugal blower; The bottom of air conveyer flume connects warehouse for finished product; The air outlet of described bag filter connects main exhaust fan air inlet, and the gas pipeline of described main exhaust fan is provided with two branch roads, and wherein a branch road is that toxic emission branch road is communicated with chimney; An other branch road is that circulated air branch road is communicated with nickel slag Vertical Mill.
In technique scheme, described nickel slag is dried thermal source and is adopted hot-blast stove; Above-mentioned hot-blast stove connects the air inlet of nickel slag vertical mill by pipeline.
Advantage and the good effect that the utlity model has are: this nickel ground-slag mill production system, it adopts column mill as milling equipment, simple and reliable for structure, failure rate is low, output is large, mill efficiency is high, cost of use and operating cost are low, power savings is obvious, and energy consumption can be controlled at 45 KWhs/ton of left and right; Can realize the fragmentation of nickel slag and levigate, realize with nickel slag in wrap up effectively peeling off and reclaiming of ferronickel, increase economic efficiency; Employing nickel slag Vertical Mill floor space is little, saving soil, improves land utilization ratio.Adopt above-mentioned production system to make this nickel ground-slag mill production technology, its production technology is simple, cost is low, be easy to realization.
Accompanying drawing explanation
Fig. 1 is the preferred process schematic flow sheet of the utility model embodiment.
In figure: 1, feeding bin; 2, constant feeder; 3, column mill; 4, vibratory sieve; 5, the first belt conveyor; 6, the first permanent magnetism self-unloading type deferrization device; 7, powerful magnetic separator; 8, the second belt conveyor; 9, the second permanent magnetism self-unloading type deferrization device; 10, screw(-type) feeder; 11, nickel slag Vertical Mill; 12, lock wind weight unloading valve; 13, elevator; 14, dry-type magnetic extractor; 15, intermediate bin; 16, bag filter; 17, weighted valve; 18, centrifugal blower; 19, air conveyer flume; 20, main exhaust fan; 21, chimney; 22, hot blast stove system; 23, warehouse for finished product.
The specific embodiment
For the utility model being done further, describe in detail, below in conjunction with the drawings and specific embodiments, be described.Especially, following examples are only to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment: refer to shown in Fig. 1, the nickel ground-slag mill production system that realizes the utility model nickel ground-slag mill production technology, its nucleus equipment mainly comprises feeding bin 1, constant feeder 2, column mill 3, vibratory sieve 4, belt conveyor 5, powerful magnetic separator 7, nickel slag Vertical Mill 11, dry-type magnetic extractor 14, bag filter 16, main exhaust fan 20 and hot blast stove system 22.
The raw material nickel slag being shipped by transport vehicle is sent into feeding bin 1 by loading machine, between feeding bin discharging opening and column mill 3 charging apertures, be provided with constant feeder 2, vibratory sieve 4 is arranged on column mill 3 belows, vibratory sieve below is equiped with the first belt conveyor 5, the first belt conveyor top is equiped with the first permanent magnetism self-unloading type deferrization device 6, powerful magnetic separator 7 is located at the first belt conveyor discharging opening below, powerful magnetic separator below is equiped with the second belt conveyor 8, the second belt conveyor top is equiped with the second permanent magnetism self-unloading type deferrization device 9, the second belt conveyor discharging opening below is equiped with screw(-type) feeder 10, screw(-type) feeder its top feed mouth is aimed at the second belt conveyor discharging opening, bottom discharge mouth is aimed at nickel slag Vertical Mill 11 inner cone centers, the slag-drip opening of nickel slag Vertical Mill bottom is equiped with lock wind weight unloading valve 12, its side is provided with elevator 13, elevator discharging opening place is connected with dry-type magnetic extractor 14 by pipeline, the discharging opening of dry-type magnetic extractor is connected with intermediate bin 15 charging apertures, the feed opening of intermediate bin is connected with the tremie pipe at nickel slag Vertical Mill top, the product outlet at nickel slag Vertical Mill top is connected with the air inlet of bag filter 16 by pipeline, bag filter discharging opening is connected with the air conveyer flume 19 that its below is provided with via weighted valve 17 by pipeline, the air outlet of bag filter is connected with main exhaust fan 20, finished product in air conveyer flume is blowed by centrifugal blower 18, and send into thus in warehouse for finished product 23, waste gas through bag filter is entered in air by chimney 21, and another branch road of main exhaust fan is introduced circulated air in nickel slag Vertical Mill again by pipeline.The air inlet of described nickel slag Vertical Mill is connected with hot blast stove system 22, the oven dry thermal source by hot blast stove system as nickel slag Vertical Mill.
The utility model nickel ground-slag mill production technology, it comprises the following steps:
1) nickel slag pretreatment of raw material, the raw material nickel slag being shipped by transport vehicle carries out air-dry airing and material screening in stockyard, makes that nickel slag water content is less than or equal to 5%, granularity is less than 60mm;
2) above-mentioned nickel slag raw material is continuously loaded in feeding bin 1, guarantees that feeding bin has a raw material supplying constantly system is in service;
3) the nickel slag of discharging from above-mentioned feeding bin discharging opening, by the how broken few mill of constant feeder 2 feeding column mill 3 pretreated feedstocks, carries out grinding in column mill, and grinding is the fine powder below 5mm to containing 90% above granularity;
4) sorting, the fine powder of being discharged by column mill discharging opening is fallen on vibratory sieve 4, by vibratory sieve, is sieved, and granularity is greater than the nickel slag meal of 5mm and is discharged by vibrating screen mesh top, and is reloaded into feeding bin, and grinding circulates; The nickel slag fine powder that is less than 5mm is discharged below vibration screen; Nickel slag fine powder after screening is discharged into the first belt conveyor 5;
5) first order deironing, the transmission nickel ground-slag mill by conveyer belt is delivered to the other end by one end of the first belt conveyor, and in course of conveying, the first permanent magnetism self-unloading type deferrization device 6 carries out deironing;
6) iron is selected in the second level, after one-level deironing, enters powerful magnetic separator 7 and carries out secondary and select iron, bulk is wrapped up to the material of ferronickel and selects; By the material loading speed of the first belt conveyor, control nickel slag fine powder by the speed of powerful magnetic separator;
7) third level deironing, drops on the second belt conveyor 8 by the nickel slag fine powder after powerful magnetic separator, and under the effect of the second belt conveyor, nickel slag fine powder carries out deironing by the second permanent magnetism self-unloading type deferrization device 9; By above-mentioned three grades of deironing, make iron content in nickel slag fine powder below 2%;
8) the nickel slag fine powder of above-mentioned acquisition, by screw(-type) feeder 10 feeding nickel slag Vertical Mills 11, is opened nickel slag when opening nickel slag Vertical Mill and is dried thermal source, obtains the nickel slag micro mist of 4200-4500cm2/g by the grinding effect of nickel slag Vertical Mill;
9) simultaneously, the more nickel slag of bulk foreign material and iron-holder is discharged through lock wind weight unloading valve 12 by the slag-drip opening of nickel slag Vertical Mill bottom, and rise to nickel slag Vertical Mill top by elevator 13, through dry-type magnetic extractor 14 deironing again, the ferronickel that material is discharged after grinding in nickel slag Vertical Mill is selected, after deironing, by intermediate bin 15, again again feed in nickel slag Vertical Mill dry, grinding, so circulation until obtain qualified nickel slag micro mist;
10) dedusting, above-mentioned nickel slag micro mist enters in bag filter 16 by the wind pipe at nickel slag Vertical Mill top, obtains nickel slag micro mist finished product after dedusting;
11) finished product storing, above-mentioned nickel slag micro mist finished product is discharged by the discharging opening of bag filter under the effect of main exhaust fan 20, by weighted valve 18, enter in air conveyer flume 17, through centrifugal blower 19, blow by air conveyer flume nickel slag micro mist finished product is sent into warehouse for finished product 23, waste gas enters atmosphere by chimney 21, another branch road of main exhaust fan is introduced circulated air in nickel slag Vertical Mill again by pipeline, and system is mended to wind, makes wind also form a closed-loop path.
In sum, this nickel ground-slag mill production system, it adopts column mill as milling equipment, and simple and reliable for structure, failure rate is low, output is large, mill efficiency is high, and cost of use and operating cost are low, power savings is obvious, and energy consumption can be controlled at 45 KWhs/ton of left and right; Can realize the fragmentation of nickel slag and levigate, realize with nickel slag in wrap up effectively peeling off and reclaiming of ferronickel, increase economic efficiency; Employing nickel slag Vertical Mill floor space is little, saving soil, improves land utilization ratio.Adopt above-mentioned production system to make this nickel ground-slag mill production technology, its production technology is simple, cost is low, be easy to realization.
The above is only to preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, every foundation technical spirit of the present utility model is to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.

Claims (2)

1. a nickel ground-slag grinding system, it is characterized in that: this system mainly comprises feeding bin, below feeding bin, be provided with constant feeder, the discharging opening of constant feeder is positioned at the charging aperture of column mill top, the discharging opening below of described column mill bottom is provided with vibratory sieve, the below of vibratory sieve discharging opening is provided with the first belt conveyor, is provided with the first permanent magnetism self-unloading type deferrization device at the top of the first belt conveyor; Below the discharging opening of the first belt conveyor, be provided with the first powerful magnetic separator, the below of described powerful magnetic separator is provided with the second belt conveyor, and the second permanent magnetism self-unloading type deferrization device is installed at the top of the second belt conveyor; The discharging opening below of described the second belt conveyor is provided with screw(-type) feeder, the discharging opening of screw(-type) feeder is provided with nickel slag Vertical Mill, described screw(-type) feeder top inlet is aimed at the port of export of the second belt conveyor, screw(-type) feeder bottom discharge mouth is aimed at nickel slag Vertical Mill inner cone center, and the slag-drip opening of described nickel slag Vertical Mill bottom is provided with lock wind weight unloading valve; At the other elevator that is provided with of nickel slag Vertical Mill; Between the charging aperture of described elevator and unloading valve, be provided with the 3rd belt type conveyer; The discharging opening of described elevator connects dry-type magnetic extractor, and the discharging opening of described dry-type magnetic extractor is provided with intermediate bin, and is connected with the charging aperture of intermediate bin; The feed opening of described intermediate bin connects the tremie pipe at nickel slag Vertical Mill top, and the product outlet at described nickel slag Vertical Mill top connects bag filter by pipeline; Described nickel slag Vertical Mill bottom connects nickel slag dries thermal source; The discharging opening below of described bag filter is provided with air conveyer flume, the discharging opening connecting conveying pipe road of bag filter, and described conveyance conduit is positioned at the top of air conveyer flume, and conveyance conduit is provided with weighted valve; The top of described air conveyer flume is provided with centrifugal blower; The bottom of air conveyer flume connects warehouse for finished product; The air outlet of described bag filter connects main exhaust fan air inlet, and the gas pipeline of described main exhaust fan is provided with two branch roads, and wherein a branch road is that toxic emission branch road is communicated with chimney; An other branch road is that circulated air branch road is communicated with nickel slag Vertical Mill.
2. nickel ground-slag grinding system according to claim 1, is characterized in that: described nickel slag is dried thermal source and adopted hot-blast stove; Above-mentioned hot-blast stove connects the air inlet of nickel slag Vertical Mill by pipeline.
CN201420246624.7U 2014-05-14 2014-05-14 Nickel slag grinding system Active CN203874873U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949322A (en) * 2014-05-14 2014-07-30 中材(天津)粉体技术装备有限公司 Nickel slag grinding system and production process thereof
CN105536966A (en) * 2016-01-29 2016-05-04 安徽省凤形耐磨材料股份有限公司 Electric furnace slag metal deep recovery technology for casting
CN108714446A (en) * 2018-06-14 2018-10-30 邹福灶 A kind of ore factory lithotripsy apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949322A (en) * 2014-05-14 2014-07-30 中材(天津)粉体技术装备有限公司 Nickel slag grinding system and production process thereof
CN105536966A (en) * 2016-01-29 2016-05-04 安徽省凤形耐磨材料股份有限公司 Electric furnace slag metal deep recovery technology for casting
CN108714446A (en) * 2018-06-14 2018-10-30 邹福灶 A kind of ore factory lithotripsy apparatus
CN108714446B (en) * 2018-06-14 2019-12-06 杭州山虎机械有限公司 Stone crushing device for ore factory

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20190322

Address after: Tianjin District of Beichen city in the 300400 major North Road No. 1

Co-patentee after: Tianjin Cement Industry Design & Research Institute Co., Ltd.

Patentee after: Sinoma (Tianjin) powder technology equipment Co., Ltd.

Address before: Tianjin District of Beichen city in the 300400 major North Road No. 1

Co-patentee before: Sinoma Technology & Equipment Group Co., Ltd.

Patentee before: Sinoma (Tianjin) powder technology equipment Co., Ltd.