CN103033043B - Method for laying refractory bricks of large variable diameter part of 12,000t/d rotary kiln - Google Patents

Abstract

The invention discloses a method for laying refractory bricks of a large variable diameter part of a 12,000t/d rotary kiln. The method is characterized by comprising the following steps of: inspecting a kiln shell; detecting the refractory bricks; longitudinally and transversely measuring and calculating a kiln axis in the rotary kiln to arrange wires; laying the refractory bricks on a boundary of a straight barrel and a diameter variation part; proportioning barrel diameter variation parameters of the diameter variation part, and adjusting and laying high-temperature fire clay; adjusting a bricklaying machine upwards, downwards, leftwards and rightwards according to the barrel diameter variation parameters for sealing; inspecting the laid refractory bricks; rotating the kiln for re-inspection; and performing inspection and acceptance. The method has the beneficial effects that the technical problem that a large kiln diameter easily forms a slight ellipse in a normal temperature state to deviate the theoretical design proportion of the refractory bricks is solved; and the refractory bricks and a kiln body are enabled to be kept concentric during cold-state and hot-state operation by measuring a deviation value to finely adjust the proportion of the refractory bricks, performing regulation by adopting a bricklaying machine regulation method, and the like, so that the laying quality of the refractory bricks of the rotary kiln is ensured, a construction period is shortened, and the construction cost is lowered.

Description

The building method of refractory brick is built at a kind of large reducing position of 12000t/d rotary kiln

Technical field

The present invention relates to a kind of masonry of Rotary Kiln method, the building method of refractory brick is built at the large reducing position that especially relates to a kind of 12000t/d rotary kiln.

Background technology

At present, 12000t/d rotary kiln, day produces grog production capacity the biggest in the world, is also kiln footpath maximum, the longest rotary kiln of reducing in the world simultaneously.Its reducing position is from Φ 6.2M by entering reducing to Φ 7.2M, and reducing length is 7.6M.In its kiln, the difficulty of construction of reducing position laying fireproof bricks is large, and masonry quality requires strict, and construction technology content is higher.Building by laying bricks or stones of Dayao footpath, large reducing position refractory brick at present, the problem that needs emphasis to solve while becoming construction.

Summary of the invention

The building method of refractory brick is built at the large reducing position that the object of this invention is to provide a kind of 12000t/d rotary kiln, solves the large problem of building construction difficulty of current Dayao footpath, large reducing position refractory brick.

The technical solution adopted for the present invention to solve the technical problems is:

A building method for refractory brick is built at the large reducing position of 12000t/d rotary kiln, and its feature is being to comprise: in the look into → detection to refractory brick of health check-up to kiln shell → to rotary kiln, longitudinally, laterally calculate the laying fireproof bricks that kiln discharge axis carries out unwrapping wire → to straight tube and reducing intersection → to the cylindrical shell reducing parameter at reducing position carry out proportioning and high-temperature flame-proof mud regulate build by laying bricks or stones → according to reducing cylindrical shell parameter, brick-laying machine regulated up and down seal → check → rotary kiln of the refractory brick laying is reexamined → is checked and accepted; Detailed description of the invention is as follows:

A) to kiln shell, health check-up is looked into; Comprise that on kiln shell body, will polish in uneven place, corrosion oxide layer, foreign material cleaning in kiln shell are clean;

B) detection to refractory brick; Comprise the technical requirement specified value of refractory brick apparent size tolerance and brick appearance and size, the large surface evenness of brick, substance, outward appearance outward appearance is checked, detected

C) carry out unwrapping wire to longitudinally, laterally calculating kiln discharge axis in rotary kiln:

C1) to dividing multimetering ovality along kiln cylinder body and measured value record being put on record;

C2) to longitudinal datum line of newly putting up a kiln; Put 8 along kiln circumference by " rice " font symmetry, every line is parallel with kiln axis; Hoop control line is also put one every 1.0m; Hoop line is parallel and perpendicular to the axis of kiln mutually;

D) laying fireproof bricks to straight tube and reducing intersection:

D1) under kiln body, semi-ring is built by laying bricks or stones: build by laying bricks or stones from both sides under kiln cylinder body is to build by laying bricks or stones in strict accordance with design ratio requirement simultaneously, it is even that brick face is touched chamotte, chamotte THICKNESS CONTROL is at >=1 millimeter, strikes tightly with rubber hammer block-by-block, guarantees that between brick and brick, chamotte is full, firm closely;

D2) on kiln body, semi-ring is built by laying bricks or stones: lower semi-ring is built by laying bricks or stones while reaching 6 to 8 meters, sets up brick-laying machine, connects source of the gas, starts to build by laying bricks or stones semi-ring when air pressure reaches five MPas, and building method is identical with lower semi-ring; Different is first to open brick-laying machine arc bow member fixed air cylinder switch, fixing head, then open successively and remember switching cylinder, cylinder makes the major part of brick be close to kiln cylinder body to brick microcephaly, build finalization area by laying bricks or stones, large face with from primer fluid press pump top to both sides brick, in the time that pressure reaches 35 MPa, turn off all switching cylinders of brick-laying machine, mobile head, open brick-laying machine arc bow member fixed air cylinder switch, fix head, turn off Pneumatic hydraulic switch pump, calculate finalization area size, seal with closer, then reinforce with edge of a knife iron plate;

E) the cylindrical shell reducing parameter at reducing position being carried out to proportioning and high-temperature flame-proof mud regulates and builds by laying bricks or stones:

In the time building by laying bricks or stones, regulate, the little direction chamotte in kiln footpath be controlled to 1 millimeter, 1.44 millimeters, the large direction in kiln footpath, require every brick must parallel vertical in longitudinal datum line;

F) according to reducing cylindrical shell parameter, brick-laying machine is regulated and sealed up and down

F1) brick-laying machine adjustment; According to brick-laying machine size and kiln cylinder body reducing positional parameter, often build Fourth Ring by laying bricks or stones brick-laying machine support height, horizontal stand extension, bow member radian are adjusted once, adjust altogether ten times, wherein need add four joint bow members for twice, respectively at the tenth five rings and the 3rd bull's eye; Last ring brick that 6.2 meters of kiln footpaths of status requirement were processed and built by laying bricks or stones to processing brick is first ring processing brick, 13.2 millimeters of the major part of brick excisions as calculated, the second ring processing brick is at last ring brick at reducing position, and the microcephaly of brick excises 13.2 millimeters, and the machined surface of brick is to 7.2 meters of kiln footpath directions;

F) refractory brick laying is checked to rotary kiln reexamines: after brick masonry in kiln finishes, remove the parts such as head, tracheae, leaving frame is slided and is checked neck brick district by kiln Caudad kiln hood direction, after neck brick district finishes by ring inspection, remove brick-laying machine frame, rotary kiln 90 degree, to 7:00 position, encircle inspection to shop fixtures and sealing junction;

G) rotary kiln reexamines rotary kiln 90 again and spends, and makes neck brick district forward 7:00 position to, then position, neck brick district is checked; After inspection finishes, then turn 90 degrees, the shop fixtures of another side and sealing junction checked,

Finally by rotary kiln idle running three circles, then enter kiln and do once comprehensive inspection, confirm errorless after, directly over neck brick district is forwarded to, deliver for a check;

H) check and accept:

After full kiln laying fireproof bricks has checked, before igniting, also tackle that full kiln bricking once makes an overall screening and necessity fastening.

Beneficial effect of the present invention: fine solution " Dayao footpath easily forms the oval technical barrier that refractory brick Theoretical Design proportioning is caused a deviation of trace under normal temperature state; by measured deviation value, refractory brick proportioning is finely tuned and adopt brick-laying machine adjustment method to adjust etc. to guarantee that refractory brick can ensure in cold conditions and hot running reliably with kiln body concentric ", ensure the masonry quality of rotary kiln refractory brick, shorten the construction period, reduce construction cost, filled up the blank that China's Dayao footpath, large reducing position laying fireproof bricks are constructed.Its technology is reached advanced world standards, and economic and social benefit is remarkable.

Below with reference to drawings and Examples, the present invention is described in detail.

Brief description of the drawings

Fig. 1 is process chart of the present invention.

Fig. 2 is the longitudinal datum line organigram of kiln body of setting up of the present invention.

Fig. 3 wants the first organigram stacking bricks in advance before the present invention builds reducing position by laying bricks or stones.

Detailed description of the invention

Embodiment 1, as shown in Figure 1, a building method for refractory brick is built at the large reducing position of 12000t/d rotary kiln, and its feature is being to comprise: in the look into → detection to refractory brick of health check-up to kiln shell → to rotary kiln, longitudinally, laterally calculate the laying fireproof bricks that kiln discharge axis carries out unwrapping wire → to straight tube and reducing intersection → to the cylindrical shell reducing parameter at reducing position carry out proportioning and high-temperature flame-proof mud regulate build by laying bricks or stones → according to reducing cylindrical shell parameter, brick-laying machine regulated up and down seal → check → rotary kiln of the refractory brick laying is reexamined → is checked and accepted; Detailed description of the invention is as follows:

Step 1: to the requirement of kiln cylinder body equipment; Rotary kiln must be complete and qualified in work such as the installation of kiln system equipment, test, idling lotus interlock test runs, possesses under the condition of building refractory lining by laying bricks or stones and just allows to build by laying bricks or stones; Weld seam on kiln cylinder body is full, qualified by test of flaw detection.Weldering surface exceeds surface of steel plate and must not be greater than 1.0mm; Manhole door on cylindrical shell etc. must not be opened in weld seam position, and more than hole back gauge weld seam 100mm; Check ring for blocking bricks must not be welded in welding position, avoids the impact of ovality as far as possible; The location tolerance of gear wheel: the beat≤1.5mm of circular radial, the beat≤1mm of end face circle.Before construction, will comprehensively check kiln shell body, on housing, will polish in uneven place, the corrosion oxide layer of kiln shell etc., and foreign material sweep cleans out;

Step 2: the preparation before building by laying bricks or stones:

Whether build front corresponding refractory brick appearance and size error criterion close inspection brick appearance and size by laying bricks or stones and meet the requirements, the large surface evenness≤0.5mm of priority control brick, requires producer or owner that refractory brick examining report examination & verification are provided;

Refractory brick: basic brick is selected import refractory brick, adopts VDZ DIN, and non-alkali bricks is selected domestic refractory brick, adopts ISO international standard.

Import refractory brick standard size: B425:250 × 76.5/66.5 × 198

B825：250×73/68.5×198

Closer standard size: BP25:250 × 64/59 × 198

BP+25：250×83/74.5×198

The domestic refractory brick standard size of non-alkalescence: 425:250 × 90/103 × 198

825：250×96.5/103×198

Closer standard size: P25:250 × 83/74.5 × 198

P+25：250×93/84.5×198

According to the orderly unpacking carrying of the blend proportion of refractory brick, the brick of transporting in kiln should divide brick type orderly piling up, and in order to reduce the breakage of brick, protects self intensity of brick, send to forbid to throw while passing brick and falls, and accomplishes to handle with care;

Step 3: ellipticity measurement: before starting to lay bricks, to divide multimetering ovality and measured value record is put on record along kiln cylinder body, if measurement data exceedes prescribed limit, must further confirm together with construction unit, supervisor, can carry out next procedure construction until up to standard.

Step 4: longitudinal datum line of newly putting up a kiln is put 8 along kiln circumference by " rice " font symmetry, and every line is parallel with kiln axis; Hoop control line is put one every 1.0m; Hoop line all should be parallel to each other and perpendicular to the axis of kiln.While building by laying bricks or stones, strictly build by laying bricks or stones by datum line; (shown in Fig. 2)

Selecting of refractory brick: basic brick is selected import refractory brick, adopts VDZ DIN, and non-alkali bricks is selected domestic refractory brick, adopts ISO international standard.

The selecting and stirring of chamotte

Select the chamotte of building requirement in kiln by laying bricks or stones that meets of high-quality, arrange special messenger to stir with agitator, be in harmonious proportion evenly, with adjusting with use.

Step 5: reducing position refractory brick build requirement by laying bricks or stones

To strictly select brick, select brick taking length all neat, concentric reducer thickness all together as main; Control the ratio of brick: the ratio requirement of building by laying bricks or stones for different kiln types is strictly built by laying bricks or stones by design proportioning, will carry out track record to the actual ratio of building by laying bricks or stones, while having big difference, will adjust in time with stoichiometric.

Before building reducing position by laying bricks or stones, want first to stack bricks in advance, to determine the accurate machining size of processing brick cut surface, mismachining tolerance≤2mm;

The adjusting of chamotte, because reducing place laying fireproof bricks is covering of the fan, must calculate chamotte thickness before laying fireproof bricks, in the time building by laying bricks or stones, regulates; Shown in Fig. 3.

(example): calculate according to the wet mortar joint 1mm that builds, suppose 7.6 meters of reducing length, reducing is 1 meter, and refractory brick length is 198mm,

: laying fireproof bricks large chamotte in reducing place will reach 1.4mm by kiln tail side thickness, and (account form is that cylindrical shell reducing differs 1m, totally 38 ring bricks, average every ring brick (length 200mm) highly differs 26mm, large the poor 81.64mm of both sides common phase (3.14 × 26mm) when every ring brick masonry, calculate divided by 190 bricks of every ring, the average every large face of brick differs 0.4mm).

The control of hoop seam: while building by laying bricks or stones, every meter long permission≤2mm of circumferential weld deviation, but loopful length variation maximum magnitude≤8mm; Control the hoop distance of refractory brick, avoid crooked, the diligent distance of measuring hoop line and brick, avoids upper and lower distortion;

The longitudinally control of datum line: when refractory brick is laid bricks, large must be parallel to longitudinal datum line.

In building by laying bricks or stones, strike tightly with wooden mallet or rubber hammer block-by-block, make its ring ring near, ensure that same ring brick is as far as possible in same level (deviation≤8mm).As finding that there is deviation when excessive, application homogeneity chamotte compensation fine setting, guarantees between large of brick that in conjunction with firmly, between brick and brick, mud is full, requires chamotte slurry plumpness should reach more than 95% while building by laying bricks or stones;

The main points of laying bricks: lay bricks must make bricking be close to cylindrical shell, brick and brick by tight, brickwork joint is straight, hand over that circle is accurate, neck brick is firm, do not misplace, sagging coming to nothing not, the stress in kiln will be evenly distributed on every brick.Guarantee that bricking and kiln body can keep reliably concentric under cold conditions He in hot running;

Processing brick requires: in the time that reducing position shop fixtures starts and finishes, will process.In kiln, lay bricks in process, if can not meet while building processing request by laying bricks or stones with standard brick, can adopt to lengthen brick and process.Must not use other basic brick to process use.

Processing brick dimensional standard is as follows: processing brick scale error is less than in 2mm; Processing thickness must not be less than 70% of standard brick; Processing length must be greater than the more than 50% of standard brick; Large face must not be processed.

The cutting of processing brick needs to adopt brick cutting machine to carry out retrofit, must not make to process by hand brick.Arrange special messenger to be responsible for, ensure the processing dimension degree of accuracy.

Processing brick brick masonry requires: when laying fireproof bricks unwrapping wire, with reducing position position while welding, put and establish hoop normal line one, when arriving this position, laying fireproof bricks must process refractory brick, for refractory brick intensity before guarantee reducing, as be placed on ring second from the bottom before reducing weld seam while processing brick < 200mm, when processing brick > 200mm, be placed on ring last before reducing weld seam.The large face length degree of processing brick must not be less than 200mm; Adopt wet block method.Chamotte should be with full, and even thickness, is about 1-1.5mm;

Step 6: set up brick-laying machine and sealing: after the frame of laying bricks is good, should first check that whether wind path is unimpeded, whether blast is sufficient, and whether cylinder works well, whether abundance and quality condition of the hydraulic oil of hydraulic top thick stick, whether sealing ring has damage etc.

Upper semi-circle brick is carried out in sealing operation process,

When neck brick, lock the adjacent ring 1-2 piece brick position of will staggering with full sized brick.In one ring brick, only allow to use same model be no more than 2 blocks of neck bricks and be evenly distributed.The processing brick of terminal will shift to an earlier date the processing of 1-2 ring.In neck brick seam, must not use steel plate;

The neck brick plate of the use of laying bricks is common cold-rolled steel sheet δ=2-3mm.Require smooth, not crimping, non-warping, without burr.Every block plate width should be less than the wide about 10mm of brick.While building by laying bricks or stones, steel plate must not exceed brick limit, at most only allows to use a block plate in every seam.In one ring brick, only allow to use be no more than 4 block plates and be evenly distributed.When neck brick, can not add completely as run into neck brick plate, the part of exposing must be cut off; Must not use steel plate to adjust brick.Attached neck brick iron plate

20 of the centres brick of sealing requires laid dry, to ensure neck brick district intensity; When sealing, brick-laying machine pressure must be at 5-7Kg/cm2; Sealing top pump pressure should reach 1/2 laid bricks cold pressing strength, and basic brick is conventionally: 22-25Mpa; High-alumina brick is: 28-35Mpa;

Step 7: brick-laying machine is adjusted scheme: according to brick-laying machine size and barrel distortion positional parameter, brick-laying machine top pump stroke is up to 160mm, barrel distortion position every ring brick discrepancy in elevation differs 26mm, the every 100mm of the brick-laying machine discrepancy in elevation and horizontal diameter (every limit 50mm) adjusts once, namely every 4 ring bricks are adjusted a brick-laying machine, at reducing position 2-3 ring, brick-laying machine under-chassis are changed and are lengthened under-chassis, are adjusting brick-laying machine simultaneously, there is special messenger to command, unify to coordinate, prevention security incident.

Step 8: must carry out brick inspection in kiln after the end of laying bricks in kiln, adopt the hard waddy of the long 1 meter of left and right of rubber hammer and φ 100-120mm to carry out knocking inspection by ring, block-by-block, the loosening timely complement iron plate of phenomenon of discovery is reinforced, and guarantees that ring ring is fastening.The abnormal conditions that the tracing process of laying bricks is occurred are as emphasis inspection.Neck brick district is the not tight weakness of hoop envelope, the emphasis checking especially.

Step 9: remove the parts such as head, tracheae after brick masonry in kiln finishes, leave frame and slide and check neck brick district by kiln Caudad kiln hood direction.Brick-laying machine frame is removed after finishing by ring inspection by neck brick district, and rotary kiln 90 degree are to 7:00 position (check point will be placed on 7:00 position all the time), and emphasis checks shop fixtures and sealing junction ring.Rotary kiln 90 is spent again, makes neck brick district forward 7:00 position to, then position, neck brick district is checked; After inspection finishes, then turn 90 degrees, the shop fixtures of another side and sealing junction checked, finally by rotary kiln idle running three circles, then enter kiln and do once comprehensive inspection, confirm errorless after, directly over neck brick district is forwarded to, deliver for a check.After full kiln laying fireproof bricks has checked, also tackle that full kiln bricking once makes an overall screening and necessity fastening before igniting, it is perfectly safe to accomplish.

Economic benefit: 12000t/d rotary kiln laying fireproof bricks is difficult to ensure the quality of products according to traditional building by laying bricks or stones, generally, in kiln, change brick and need to stop kiln → cold kiln 48h → enter kiln maintenance 12h → igniting, intensification 24h, amount to 84h, by production every day production capacity 12000t grog, 220 yuan of calculating of grog unit price per ton, causing direct economic loss is exactly 12000 × (84 × 24) × 220=9240000 unit.Cost reduction, shortened the duration, obtained good economic benefit.

This engineering method construction system is simple, replaces original push rod masonry method, has ensured like this construction safety, has guaranteed masonry quality, save a large amount of manpowers, shortened the duration, reduced cost, and homemade brick-laying machine can reuse, build comparison by laying bricks or stones with push rod and can save up to ten million funds.Adopt this engineering method can save a large amount of funds, human and material resources, existing market occupation rate is 100%.

Social benefit: traditional building by laying bricks or stones can only ensure that refractory brick cement industry service cycle specification is 12 months, build by laying bricks or stones and can guarantee that refractory brick operates to more than 36 months by this engineering method, large reducing position is 780000 yuan of calculating by one-period refractory brick cost and construction cost, save 2 cycles, economize on the use of funds is exactly 1560000 yuan, in prediction on such basis, for country has saved a large amount of all kinds of energy and productivity, for motherland's environmental protection, energy-conservation cause are made huge contribution.

This construction method does not need to set up any scaffold, and security performance is high, is at home and abroad safest a kind of construction at present.

This construction method is that country has saved a large amount of steel, has also saved a large amount of labours, has improved productivity, and having saved cost is also the engineering method of energy-conserving and environment-protective both at home and abroad at present.

This construction method engineering method has been filled up international cement rotary kiln reducing position job specfication.All kinds of kiln type reducings position is built by laying bricks or stones to the effective building method that a stripe shape is provided.

Claims (1)

1. the building method of refractory brick is built at the large reducing position of 12000t/d rotary kiln, it is characterized in that comprising that health check-up is looked into kiln shell → detection to refractory brick → carry out longitudinally, laterally calculating kiln discharge axis in rotary kiln the laying fireproof bricks of unwrapping wire → to straight tube and reducing intersection → to the cylindrical shell reducing parameter at reducing position carry out proportioning and high-temperature flame-proof mud regulate build by laying bricks or stones → according to reducing cylindrical shell parameter, brick-laying machine regulated up and down seal → check → rotary kiln of the refractory brick laying is reexamined → is checked and accepted; Detailed description of the invention is as follows:

A) to kiln shell, health check-up is looked into; Comprise that on kiln shell body, will polish in uneven place, corrosion oxide layer, foreign material cleaning in kiln shell are clean;

B) detection to refractory brick; Comprise the technical requirement specified value of refractory brick apparent size tolerance and brick appearance and size, the large surface evenness of brick, substance, outward appearance is checked, detected;

C) carry out unwrapping wire to longitudinally, laterally calculating kiln discharge axis in rotary kiln:

C1) to dividing multimetering ovality along kiln cylinder body and measured value record being put on record;

C2) to longitudinal datum line of newly putting up a kiln; Put 8 along kiln circumference by " rice " font symmetry, every line is parallel with kiln axis; Hoop control line is put one every 1.0m; Hoop line is parallel and perpendicular to the axis of kiln mutually;

D) laying fireproof bricks to straight tube and reducing intersection:

D1) under kiln body, semi-ring is built by laying bricks or stones: build by laying bricks or stones from both sides under kiln cylinder body is to build by laying bricks or stones in strict accordance with design ratio requirement simultaneously, it is even that brick face is touched chamotte, chamotte THICKNESS CONTROL is at >=1 millimeter, strikes tightly with rubber hammer block-by-block, guarantees that between brick and brick, chamotte is full, firm closely;

D2) on kiln body, semi-ring is built by laying bricks or stones: lower semi-ring is built by laying bricks or stones while reaching 6 to 8 meters, sets up brick-laying machine, connects source of the gas, starts to build by laying bricks or stones semi-ring when air pressure reaches five MPas, and building method is identical with lower semi-ring; Different is first to open brick-laying machine arc bow member fixed air cylinder switch, fixing head, then open successively and remember switching cylinder, cylinder makes the major part of brick be close to kiln cylinder body to brick microcephaly, build finalization area by laying bricks or stones, large face with from air-driven hydraulic pump top to both sides brick, in the time that pressure reaches 35 MPa, turn off all switching cylinders of brick-laying machine, mobile head, open brick-laying machine arc bow member fixed air cylinder switch, fix head, turn off Pneumatic hydraulic switch pump, calculate finalization area size, seal with closer, then reinforce with edge of a knife iron plate;

E) the cylindrical shell reducing parameter at reducing position being carried out to proportioning and high-temperature flame-proof mud regulates and builds by laying bricks or stones:

In the time building by laying bricks or stones, regulate, the little direction chamotte in kiln footpath is controlled to 1 millimeter, 1.44 millimeters, the large direction in kiln footpath, requires the every brick must be perpendicular to longitudinal datum line;

F) according to reducing cylindrical shell parameter, brick-laying machine is regulated and sealed up and down;

F1) brick-laying machine adjustment; According to brick-laying machine size and kiln cylinder body reducing positional parameter, often build Fourth Ring by laying bricks or stones brick-laying machine support height, horizontal stand extension, bow member radian are adjusted once, adjust altogether ten times, wherein need add four joint bow members for twice, respectively at the tenth five rings and the 3rd bull's eye; Last ring brick that 6.2 meters of kiln footpaths of status requirement were processed and built by laying bricks or stones to processing brick is first ring processing brick, 13.2 millimeters of the major part excisions of brick, the second ring processing brick is at last ring brick at reducing position, and the microcephaly of brick excises 13.2 millimeters, and the machined surface of brick is to 7.2 meters of kiln footpath directions;

F2) refractory brick laying is checked: after brick masonry in kiln finishes, remove the parts such as head, tracheae, leaving frame is slided and is checked neck brick district by kiln Caudad kiln hood direction, after neck brick district finishes by ring inspection, remove brick-laying machine frame, rotary kiln 90 degree, to 7:00 position, encircle inspection to shop fixtures and sealing junction;

G) rotary kiln reexamines; Rotary kiln 90 is spent again, makes neck brick district forward 7:00 position to, then position, neck brick district is checked; After inspection finishes, then turn 90 degrees, the shop fixtures of another side and sealing junction checked,

Finally by rotary kiln idle running three circles, then enter kiln and do once comprehensive inspection, confirm errorless after, directly over neck brick district is forwarded to, deliver for a check;

H) check and accept:

After full kiln laying fireproof bricks has checked, before igniting, also tackle that full kiln bricking once makes an overall screening and necessity fastening.