CN1191963A - Locking mouth-masonning method for rotary kiln lining by using combined locking brick - Google Patents

Abstract

The said masonning method includes mouth-locking masonning for inner lining of rotary kiln with combined mouth-locking brick and several kinds of combined mouth-locking bricks, which are designed based on the sizes of wedged brick and can mason locking mouth tight. The present invention can shorten greatly the repair time, reduce cost and labor strength and raise masonry quality.

Description

A kind of combined type fore shaft brick that utilizes carries out the method that inner liner of rotary kiln is built fore shaft by laying bricks or stones

The present invention relates to building by laying bricks or stones of inner liner of rotary kiln, particularly a kind of combined type fore shaft brick that utilizes carries out the method that inner liner of rotary kiln is built fore shaft by laying bricks or stones.

Rotary kiln is the common equipment of cement plant or alumina producer.Rotary kiln itself is a steel structure, but one deck refractory brick liner is arranged on inwall.The method that inside lining building is commonly used is to build by laying bricks or stones with eyelid retractor, builds by laying bricks or stones from minimum point, when laying bricks above half cycle 2～3 row, eyelid retractor is installed, and build by laying bricks or stones on rotary kiln limit in limit then, finishes until last fore shaft.It is to stay 3～4 last row to carry out fore shaft when kiln lining is built by laying bricks or stones that present inner liner of rotary kiln is built the fore shaft technology by laying bricks or stones, adopt existing arch brick during fore shaft, press the actual brick size of using of fore shaft, machining or manual processing are carried out in the scene, but, adopt said method to carry out fore shaft and exist many shortcomings with not enough: adopt by hand arch brick is carried out on-the-spot method for processing, labor strength is big, the difficult quality guarantee of processing brick; Adopt machining process, though labor strength decreases, increased the production cost of processing brick, the brick after the processing is cooled simultaneously influences its serviceability after the water-soaked; Consumed a large amount of effective times because of processing brick at the scene, efficiency is reduced; Particularly add and a whole refractory brick will be cut man-hour, cut away part and all scrap, cause the serious waste of material.

The purpose of this invention is to provide a kind of combined type fore shaft brick that utilizes and carry out the method that inner liner of rotary kiln is built fore shaft by laying bricks or stones.

Of the present inventionly utilize combined type fore shaft brick to carry out inner liner of rotary kiln to build the method for fore shaft by laying bricks or stones and be: if used little area of bed of building the general arch brick thickness of liner by laying bricks or stones is not less than 72mm, when inner liner of rotary kiln is built to the fore shaft place, reserve the brick mouth between 2～3 row bricks, build fore shaft by laying bricks or stones with the combination of combined type fore shaft brick, then need following several combined type fore shaft brick, its method for designing is as follows:

The 1st kind: little area of bed (being designated as X1) is 2/3 of general arch brick, and big area of bed is then decided according to little area of bed and inner liner of rotary kiln arch brick design rule, and length is identical with general arch brick with height.

The 2nd kind: little area of bed (X2) is that the 1st kind of little area of bed of fore shaft brick (X1) adds 4mm; The major part size design is decided according to X2 and design rule, and length is identical with general arch brick with height.

The 3rd kind: little area of bed (X3) is that the 2nd kind of little area of bed of fore shaft brick (X2) adds 4mm; The major part size design is decided according to X3 and design rule, and length is identical with general arch brick with height.

The 4th kind: little area of bed (X4) is that the 3rd kind of little area of bed of fore shaft brick (X3) adds 4mm; The major part size design is decided according to X4 and design rule, and length is identical with general arch brick with height.

The rest may be inferred, extraordinarily goes up four demultiplications that 1.5mm is not less than the 1st kind of little area of bed of fore shaft brick when removing 2mm when three of the little area of bed of fore shaft brick that obtains, and then designed several fore shaft bricks can satisfy the fore shaft demand.

Of the present inventionly utilize combined type fore shaft brick to carry out inner liner of rotary kiln to build the method for fore shaft by laying bricks or stones and can also be: if the little area of bed of used general arch brick of building liner by laying bricks or stones is less than 72mm, when inner liner of rotary kiln is built to the fore shaft place, reserve the brick mouth between 3～4 row bricks, build fore shaft by laying bricks or stones with the combination of combined type fore shaft brick, then need following several combined type fore shaft brick, its method for designing is as follows:

The 1st kind: little area of bed (being designated as a1) adds 4mm for the little area of bed of general arch brick; Big area of bed can be decided according to little area of bed and arch brick design rule, and length is identical with general arch brick with height.

The 2nd kind: little area of bed (a2) adds 4mm for a1; Big area of bed is decided according to design rule, and length is identical with general arch brick with height.

The rest may be inferred, extraordinarily goes up 4 demultiplications that 1.5mm is not less than the little area of bed of general arch brick thickness when removing 2mm when three of the little area of bed of fore shaft brick that obtains, and then She Ji several fore shaft bricks can satisfy the fore shaft demand.

Of the present inventionly utilize combined type fore shaft brick to carry out inner liner of rotary kiln to build the method for fore shaft by laying bricks or stones and can shorten maintenance duration significantly, reduce the cost of overhaul, because of every kiln of large-scale rotary kiln whenever stopped 1 hour, the loss that will bring surplus in the of 60,000 yuan to enterprise, and when inner liner of rotary kiln overhauls, adopt this method, each maintenance can save the duration more than 4 hours, and can improve the quality that inner liner of rotary kiln is built fore shaft place masonry by laying bricks or stones, also can reduce labor strength, economic benefit and obvious social benefit significantly simultaneously.

Adopt the combined type fore shaft brick fore shaft of the present invention and the construction effect of processing brick fore shaft to contrast as following table.

Index	Processing brick fore shaft	Combined type fore shaft brick fore shaft
			Fore shaft speed	2m/ hour	15m/ hour
Processing charges	200 yuan/t	????0
			The refractory brick waste	1 meter of 50kg/ fore shaft	????0
Fore shaft place brickwork joint qualification rate	????80％	????100％

Further describe the present invention below in conjunction with drawings and Examples.

Accompanying drawing 1 is the arch brick schematic diagram.

Embodiment 1:

As single-revolution kiln (Φ 4.5m * when 100m) inside lining is to the fore shaft place, the little area of bed of used general arch brick thickness is not less than 72mm, the fore shaft place reserves the size of brick mouth between 2～3 row bricks, be 3m+4 δ) during W＞2m+3 δ, as shown in Figure 2, W is the young area of bed of brick in the formula, general arch brick shape as shown in Figure 1, every size is as follows:

M is 91.5mm, and n is 103mm, and H is 250mm, and L is 164mm, and the kiln liner is II class lining body, longitudinal seam δ=2mm.

Height H=the 250mm of then required combined type fore shaft brick, length L=164mm, gauge is total following several: the 1st kind of (being designated as A): X1=2/3 * 91.5=61mm $y1=\frac{R}{R-H}X1=68.6\mathrm{mm}$ The 2nd kind of (being designated as B): X2=61+4=65mm $y2=\frac{R}{R-H}X2=73.1\mathrm{mm}$ The 3rd kind of (being designated as C): X3=65+4=69mm $y3=\frac{R}{R-H}X3=77.6\mathrm{mm}$ The 4th kind of (being designated as D): X4=69+4=73mm $y4=\frac{R}{R-H}X4=82.1\mathrm{mm}$ The 5th kind of (being designated as E): X5=73+4=77mm $y5=\frac{R}{R-H}X5=86.6\mathrm{mm}$ The 6th kind of (being designated as F): X6=77+4=81mm $y6=\frac{R}{R-H}X6=91.1\mathrm{mm}$

And this moment, 3 * 81 (X6)+1.5=244.5＞4 * 61 (X1)～2=242 promptly have 6 kinds of bricks just can satisfy the needs of this masonry of Rotary Kiln fore shaft.

Wherein said R is a cylinder of rotary kiln cross section internal diameter.

During construction,, produce the simulation of fore shaft brick and build table (table 1) by laying bricks or stones, can finish the fore shaft operation by the combination in the table according to the size range of scene reservation brick mouth.

Table 1 fore shaft stock mould intends building by laying bricks or stones table

Brick mouth size (microcephaly)	Configuration fore shaft brick	Brickwork joint (vertically)	Brick mouth size (microcephaly)	Configuration fore shaft brick	Brickwork joint (vertically)
						??190～193mm	????3A	??4δ	237～241mm	????3E	????4δ
??193～197mm	??2A+1B	??4δ	241～245mm	??2E+1F	????4δ
						??197～201mm	??2A+1C	??4δ	245～249mm	??2F+1E	????4δ
??201～205mm	??2A+1D	??4δ	249～253mm	????3F	????4δ
						??205～209mm	??2A+1E	??4δ	253～256mm	????4A	????5δ
??209～213mm	??2A+1F	??4δ	256～260mm	??3A+1B	????5δ
						??213～217mm	??2B+1E	??4δ	260～264mm	??3A+1C	????5δ
??217～221mm	??2B+1F	??4δ	264～268mm	??3A+1D	????5δ
						??221～225mm	??2C+1E	??4δ	268～272mm	??3A+1E	????5δ
??225～229mm	??2C+1F	??4δ	272～276mm	??3A+1F	????5δ
						??229～233mm	??2D+1E	??4δ	276～280mm	??3B+1D	????5δ
??233～237mm	??2D+1F	??4δ	280～282mm	??3B+1E	????5δ

δ ∈ (1.5,2.5) wherein.

Should illustrate, during inner liner of rotary kiln is built by laying bricks or stones, build, during the fore shaft brick fore shaft on utilization, introduced, generally require the hoop straight joint, because brick mouth size alters a great deal along the rotary kiln axial direction no matter require the fissure of displacement to build still ring by laying bricks or stones.

Embodiment 2

Certain Φ of factory 4.0m * reserve the size of brick mouth when the 100m inner liner of rotary kiln is built fore shaft by laying bricks or stones between 3～4 row bricks, build general arch brick thickness microcephaly size m＜72mm that liner is used by laying bricks or stones, i.e. 4m+5 δ＞W＞3m+4 δ, as shown in Figure 2, W is the young area of bed of brick in the formula, the shape of general arch brick as shown in Figure 1, every size is as follows: m=66.5mm, n=76.5mm, H=250mm, L=164mm, kiln liner are II class masonry, longitudinal seam δ=2mm.

Height H=the 250mm of then required combined type fore shaft brick, length L=164mm, gauge is total following several: the 1st kind of (being designated as A): X1=m+4=70.5mm $y1=\frac{R}{R-H}x1=80.6\mathrm{mm}$ The 2nd kind of (being designated as B): x2=x1+4=74.5mm $y2=\frac{R}{R-H}x2=85.2\mathrm{mm}$ The 3rd kind of (being designated as C): x3=x2+4=78.5mm $y3=\frac{R}{R-H}x3=89.7\mathrm{mm}$ The 4th kind of (being designated as D): x4=x3+4=82.5mm $y4=\frac{R}{R-H}x4=94.3\mathrm{mm}$ The 5th kind of (being designated as E): x5=x4+4=86.5mm $y5=\frac{R}{R-H}x5=98.9\mathrm{mm}$ The 6th kind of (being designated as F): x6=x5+4=90.5mm $y6=\frac{R}{R-H}x6=103.4\mathrm{mm}$

At this moment, 3 * 90.5+1.5=273＞4 * 66.5-2=266 promptly has 6 kinds of bricks just can satisfy the needs of masonry of Rotary Kiln fore shaft.

During construction,, make the simulation of fore shaft brick and build table (table 2) by laying bricks or stones, can finish the fore shaft operation by the combination in the table according to the size range of reserving the brick mouth.

Table 2 fore shaft stock mould intends building by laying bricks or stones table

Brick mouth size (microcephaly) mm	Configuration fore shaft brick	Brickwork joint (vertically)	Brick mouth size (microcephaly) mm	Configuration fore shaft brick	Brickwork joint (vertically)
						??207.5～209.5	??3P	??4δ	241.5～245.5	??3C	??4δ
??209.5～213.5	?2P+1A	??4δ	245.5～249.5	?2C+1D	??4δ
						??213.5～217.5	?1P+2A	??4δ	249.5～253.5	?1C+2D	??4δ
??217.5～221.5	??3A	??4δ	253.5～257.5	??3D	??4δ
						??221.5～225.5	?2A+B	??4δ	257.5～261.5	?2D+1E	??4δ
??225.5～229.5	?1A+2B	??4δ	261.5～265.5	?1D+2E	??4δ
						??229.5～233.5	??3B	??4δ	265.5～269.5	??3E	??4δ
??233.5～237.5	?2B+1C	??4δ	269.5～273.5	?2E+1F	??4δ
						??237.5～241.5	?2C+1B	??4δ	273.5～276	??4P	??5δ

Used general arch brick when wherein P represents inside lining building, δ ∈ (1.5,2.5).

Should illustrate, during inner liner of rotary kiln is built by laying bricks or stones, build, during the fore shaft brick fore shaft on utilization, introduced, generally require the hoop straight joint, because brick mouth size alters a great deal along the rotary kiln direction of principal axis no matter require the fissure of displacement to build still ring by laying bricks or stones.

Claims (2)

1, a kind of combined type fore shaft brick that utilizes carries out the method that inner liner of rotary kiln is built fore shaft by laying bricks or stones, it is characterized in that: if used little area of bed of building the general arch brick thickness of liner by laying bricks or stones is not less than 72mm, when inner liner of rotary kiln is built to the fore shaft place, reserve the brick mouth between 2～3 row bricks, build fore shaft by laying bricks or stones with the combination of combined type fore shaft brick, then need following several combined type fore shaft brick, its method for designing is as follows:

The 1st kind: little area of bed (being designated as X1) is 2/3 of general arch brick, and big area of bed (being designated as Y1) is then decided according to little area of bed and inner liner of rotary kiln arch brick design rule, and length is identical with general arch brick with height;

The 2nd kind: little area of bed (X2) is that the 1st kind of little area of bed of fore shaft brick (X1) adds 4mm; The major part size design is decided according to X2 and design rule, and length is identical with general arch brick with height;

The 3rd kind: little area of bed (X3) is that the 2nd kind of little area of bed of fore shaft brick (X2) adds 4mm; The major part size design is decided according to X3 and design rule, and length is identical with general arch brick with height;

The 4th kind: little area of bed (X4) is that the 3rd kind of little area of bed of fore shaft brick (X3) adds 4mm; The major part size design is decided according to X4 and design rule, and length is identical with general arch brick with height;

The rest may be inferred, extraordinarily goes up four demultiplications that 1.5mm is not less than the 1st kind of little area of bed of fore shaft brick when removing 2mm when three of the little area of bed of fore shaft brick that obtains, and then designed several fore shaft bricks can satisfy the fore shaft demand.

2, a kind of combined type fore shaft brick that utilizes carries out the method that inner liner of rotary kiln is built fore shaft by laying bricks or stones, it is characterized in that: if the little area of bed of used general arch brick of building liner by laying bricks or stones is less than 72mm, when inner liner of rotary kiln is built to the fore shaft place, reserve the brick mouth between 3～4 row bricks, build fore shaft by laying bricks or stones with the combination of combined type fore shaft brick, then need following several combined type fore shaft brick, its method for designing is as follows:

The 1st kind: little area of bed (being designated as a1) adds 4mm for the little area of bed of general arch brick; Big area of bed can be decided according to little area of bed and arch brick design rule, and length is identical with general arch brick with height;

The 2nd kind: little area of bed (a2) adds 4mm for a1; Big area of bed is decided according to design rule, and length is identical with general arch brick with height;

The rest may be inferred, extraordinarily goes up 4 demultiplications that 1.5mm is not less than the little area of bed of general arch brick thickness when removing 2mm when three of the little area of bed of fore shaft brick that obtains, and then She Ji several fore shaft bricks can satisfy the fore shaft demand.

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