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GB 12434-2008: Regulations of dust control for refractory enterprises
Status: Valid GB 12434: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 12434-2008 | English | 169 |
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Regulations of dust control for refractory enterprises
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GB 12434-2008
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| GB 12434-1990 | English | 239 |
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Regulations of dust control for refractory enterprises
| Obsolete |
GB 12434-1990
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PDF similar to GB 12434-2008
Basic data | Standard ID | GB 12434-2008 (GB12434-2008) | | Description (Translated English) | Regulations of dust control for refractory enterprises | | Sector / Industry | National Standard | | Classification of Chinese Standard | C70 | | Classification of International Standard | 13.100�� | | Word Count Estimation | 7,744 | | Date of Issue | 2008-12-23 | | Date of Implementation | 2009-12-01 | | Older Standard (superseded by this standard) | GB 12434-1990 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 21 of 2008 (No. 134 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the refractory enterprises the basic requirements for protection against dust and integrated dust control measures. This standard applies to the design and management of refractory enterprises dust. | GB 12434-2008: Regulations of dust control for refractory enterprises---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Regulations of dust control for refractory enterprises
ICS 13.100
C70
National Standards of People's Republic of China
Replacing GB 12434-1990
Regulations of dust refractory enterprises
Posted 2008-12-23
2009-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard 4.4,4.5,4.6,5.2,5.10,6.1.3,6.1.4,6.3.2,6.3.7,6.6. 4,7.1.3,7.1.4,7.1.6 are recommended
The rest is mandatory.
This standard replaces GB 12434-1990 "Regulations of dust refractory enterprises."
This standard compared with GB 12434-1990, made the following major changes.
--- Added "Terms and Definitions" chapter;
--- The comprehensive technical measures are divided into. "plant construction", "production technology and equipment", "major step in the dust," "dust removal system design
Gauge and Maintenance "chapters be discussed;
--- Part of the mandatory provisions recommended adjustment provisions;
This standard was proposed by the State Administration of Work Safety.
This standard produced by the National Technical Committee of Standardization Technical Committee of dust and poison safety.
This standard is drafted by. China Steel Group, Wuhan Research Institute of safety and environmental protection.
Participated in the drafting of this standard. ACRE Coking & Refractory Engineering Technology Co., Ltd., Sinosteel Luoyang Institute of Refractories Research, Sinosteel Refractory
Material Co., Ltd.
The main drafters of this standard. Li Xiaofei, high Shihlin, Zhao Dan force, Di Guohua, Wang Rui, Shen-considered, Hudong Tao, long known Hong, Wang Man, Chen Qiang.
This standard was first published in 1990 and 2008, the first revision.
Regulations of dust refractory enterprises
1 Scope
This standard specifies the basic requirements related to dust and refractory enterprises comprehensive dust control measures.
This standard applies to the design and management of dust and refractory enterprises.
2 Terms and definitions
The following terms and definitions apply to this standard.
2.1
It refers to the physical and chemical properties of metallic materials suitable for use in high temperature environments, but do not rule out some products may contain a certain amount of gold
Metallic material.
2.2
So shaped refractory products produced sintering heat treatment.
2.3
In the construction of monolithic refractories or sample preparation, the use of vibration to make dense manner.
3 Basic provisions
3.1 Production process and equipment should take effective dust control measures. Can choose wet production process, should be preferred.
3.2 Where the new construction, expansion, reconstruction and technical transformation projects, the project should dust control measures with the main project designed, constructed and put into operation
use.
3.3 Maintenance of the dust-proof equipment, maintenance should be included in the production and operation plans; dust removal system failure stop, should also stop production equipment
car. Production equipment overhaul, maintenance dustproof device should at the same time and put into use.
3.4 dedusting facility, does not allow any removal or other purposes.
3.5 should configure the dust removal system according to the production process, in order to capture dust.
3.6 dust pass rate, dust removal equipment in good condition and operation rate, should be included in the assessment of economic and technical indicators of the enterprise.
4 plant construction
4.1 Installation precipitator floor height, it should ensure that there is an upper filter maintenance operations space.
4.2 around the inside walls and ground plant buildings should be smooth. When the plant should water washing facilities (production Yasumizu variety of cases
outer).
4.3 devices, interlayer floor and walls holes on the chute, through the pipeline, and should try to open small holes in the floor to be provided with four weeks of high 50mm
Waterproof boss.
4.4 raw material crushing, grinding operations, and forming operations should be separated to prevent cross-contamination of dust.
4.5 molding, drying, firing and oil operations, such as the top of the plant, should be established shelter skylight.
4.6 Library materials should form a closed structure.
5 Production Technology and Equipment
5.1 should be mechanized, tightly closed, continuous production process, minimizing material transit links, reduce material gap, shorten material handling
distance.
5.2 of the same nature of the production process equipment, should be centralized arrangement, and to meet the vertical or horizontal lines operating requirements.
5.3 arranged production equipment, should provide the necessary conditions for the rational arrangement of dust removal system, and allow enough space for the maintenance of dust removal equipment.
5.4 production equipment with matching dust removal equipment, electrical interlocking should delay opening stop device.
5.5 belt conveyor shall be provided sweeper.
5.6 firing process should be used in the tunnel kiln, shuttle kiln, down draft kiln is generally no longer used.
5.7 semi-finished drying should be suitable for the production of clean dry kiln, such as a tunnel kiln drying, chamber drying kiln.
5.8 Oil bitumen products operations, should be vacuum sealed immersion process, and should be equipped with ventilation purification facilities.
5.9 Oil asphalt surface treatment products should be used in mechanization and automation of the production process, and should be equipped with ventilation purification facilities.
5.10 grinding and cutting machining firebrick, we should adopt a wet process and effective dust removal measures.
Dust 6 primary steps
6.1 Library materials and crushing section
6.1.1 Library materials should ensure the normal flow of material to prevent the collapse of the material and dust to escape.
Raw material storage 6.1.2 closed structure, its bridge grab crane cab, install safety regulation and purification devices.
6.1.3 Non-freezing season, the desirability of non-hydraulic stockpile raw materials within the library spray water spray.
6.1.4 grab by the trough should be established exposure suction hood. Each tank should be established independent removal system.
6.1.5 jaw crusher inlet and outlet opening should be located closed hood and ventilation and dust removal, spray watering facilities provided when necessary (when production of varieties Yasumizu
exception).
6.2 pulverized and mixed section
6.2.1 Production system should be set up crushing operations dedusting system.
6.2.2 various dust production equipment should be tightly closed from the process. Undersize conveyor belt conveyor powder, should be fully enclosed.
6.2.3 crushed section of high-rise buildings, dust removal equipment should be arranged at the top, and to recover the dust directly back to the corresponding production systems
Powder to the finished product tank.
6.2.4 In order to facilitate the mixing section of filter material back, dust removal equipment should be arranged in the top section of the ground.
6.2.5 Cage crusher discharge port when connected conveyor belt, which suction hood should be located in the lower part of the mill by a tank; when the spout chute then lift
When the helicopter or screw conveyor and chute and closed more rigorous body can only screw conveyor or on a hoist body suction.
6.2.6 surrounding the discharge ball mill hood should be located in the mill housing, feed chute when the gap is greater than 2m, the inlet should
Let me expand.
6.2.7 cone, hammer, roll crusher and counterattack, etc., shall take measures confined dust.
6.2.8 tube mill inlet and outlet opening should be sealed dust.
6.2.9 bucket hoist hood, when the conveying hot material should be disposed in the upper hoist; machine tape feed, the tape machine and the head
On the hoist housing should be located suction hood.
6.2.10 Belt should be closed as a whole; or locally confined at feed point, unloading point by the middle closed with a lift guide
Airtight cover or fixed cover.
6.2.11 reversible mobile belt conveyor sealed housing can be closed or full form. Cover type hood should be located at the feed point
About two inlet location on; all sealed reversible belt conveyor can be provided a plurality of suction points.
6.2.12 Conveyor Stacker width shall formula (1).
Chou ≤ (0.9B-0.05) (1)
Where.
Chou --- stacker width in meters (m);
B --- tape width in meters (m).
6.2.13 shaker, rotating screen and a fixed ramp sieve, recess should cover the whole hood closed or partially closed hood and ventilation and dust.
6.2.14 weigh batching tank cars and hopper by the feeding of the fan-shaped valve closed, ventilation and dust removal facilities should be located.
6.2.15 storage tank should be based on the composition of the feed chute and manner, effectively sealed dust. Wind chute should pulse bag
Dust collector exhaust gas purification. Trough groove wall openings shall be not less than two. Opening bottom of the hole should set aside a certain slope to prevent fouling.
6.2.16 powder bagging or bagging scales should be used packaging machines bagging, and effectively sealed dust.
6.2.17 all feeding equipment shall be sealed dust.
6.2.18 wet rolling machine and single, biaxial mixers and other mixing equipment, measures should be taken to a closed dust.
6.2.19 Mobile unloading trucks closed, may be slit-shaped trough stoma closed, fixed partial discharge chute mouth closed or trough large bulk density
Closed form.
6.3 molding station
Section 6.3.1 molding plant, carried out with a power spray unit dust (production Yasumizu variety of exceptions).
6.3.2 friction press, should be adopted at the next unilateral or bilateral suction suction suction hood.
6.3.3 PRESS feed trough should be used annular suction hood.
6.3.4 scales closed, should be used to cover the suction side.
6.3.5 brick gauging station should be located suction hood.
6.3.6 top disc screen should be set off activity sealed cover; screen under the hopper, discharge drain mouth, should set a fixed enclosure. The lower part of enclosure should
Let the dust cover curtain.
6.3.7 remove brick dust surface, blow should be taken with a sealed cover, dust absorbing measures.
6.3.8 brick waste, waste should be placed in special waste bins, and should be promptly treated.
6.4 drying and calcining station
6.4.1 drying, baking section, there should be a natural ventilation.
Operating area and installed two sets of brick tunnel kiln firing paragraph 6.4.2 of between unloading workplace brick station, shall be fitted with spray fan.
6.4.3 upper space within the plant and kiln car repair place, the electric spray unit should be located.
Section 6.5 lime
6.5.1 Natural ventilation plant shall be provided with a hood.
6.5.2 scales iron mill processing, dust removal system should be set up.
6.6 Shaft Kiln Section
6.6.1 fabric layer operating area, spray fan should be located.
6.6.2 shaft kiln, when there is room cover and walls should be provided with natural ventilation hood.
6.6.3 pit material by bucket elevator shall be provided cover; rack four weeks should be set up closed hoarding and hoarding by both sides and the top of the upper portion of the suction trough located
Wind shield.
6.6.4 Ore quantitative scale, should be closed dust.
6.6.5 Shaft Kiln spout and slat conveyors that feed points should be located dust removal system. When several vertical kiln share a slat conveyors, it should be in every
The feed point by a conveyor, each with a suction point.
Kiln Section 6.7
6.7.1 kiln operating area, spray fan should be located.
6.7.2 cooling equipment and the discharge port plate conveyor (or a tape machine) by feeding points should be located dust removal system.
7 dust removal system design and maintenance
7.1 Dust System Design
7.1.1 Design of dust removal system, dust production should meet the required point dedusting air volume and velocity requirements.
7.1.2 of the same production process, while producing work of dust spots can be combined into a dust removal system.
7.1.3 simultaneously, the different types of dust dust production points, such as allowing dust when mixed recycling, should be combined into a dust removal system.
7.1.4 different humidity, temperature, dust-containing gas, if the pipeline could cause condensation, not mixed together as a dust removal system.
7.1.5 When the dust level laying pipes, measures should be taken to prevent the deposition of dust in the pipe.
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