Basic structure parameters VSBK is designed as a closed kiln structure owing to its vertical firing system. The box shaped kiln structure owes its shape from the insulation filling and retaining walls around the shaft. The height and cross-section of the shaft has been standardized to an optimum output capacity. Marginal variations of the shaft height (11 batches – 13 batches) are considered depending on the green brick and fired compressive strength. Nominal shaft dimensions are 1m x 2m with adjustable variations depending on the green brick length and height. The shaft size cannot be made larger due to operational problems. However the width of the kiln can be varied to a certain degree according to the need and investment capacity of the entrepreneurs. The five options will highlight on different features of the kiln with the same production capacity. The major trading takes place between the storage capacity on the kiln platform and the cost of the kiln structure. Non compromising parameters

Refractory brick lining along the fire zone Buttress walls he shaft Atleast 2 metres of insulation filling all along t Chimneys and related unloading equipments Cooling chamber

VSBK option 1 Single shaft kiln suitable for small scale clamp owners and community of brick workers. Less space at loading platform suitable only for storing green bricks for night operations. Brick work is done in mud mortar with cement pointing. Features:

11 batch height of shaft. Platform of 13’ by 12’ on top without cantilever. Brick soling on top.

Storing of only a few thousand bricks at the top. ading

t

aft. th. batch)

. Cemented trolley guides for vertical movement.

one and brick foundation.

MS staircase for manual lifting of green bricks to loplatform.

Buttresses are redundant due to less width of the kiln. Brick work above ground level in mud mortar with cemenpointing of mortar joints.

Four tie beams at an interval of 4’ starting from arch base. Three peep-hole pipes for monitoring of fire in the sh Refractory brick lining in the firing zone (3rd. to 9only.

Angle with square bar sections used as rail section

Conventional stInvestment required: 3 lakhs (1 shaft).

VSBK option 2 Economized design in terms of the width of the structure. Good

material is needed for less heat loss from structure. A

F

ing from arch base

Three peep-hole pipes for monitoring of fire in each shaft. lining in the firing zone (3rd. to 9th. batch) only.

Angle and square bar sections used as trolley track.

Investment required: 5 lakhs (2 shafts).

VS ption 3

insulating ho ist is essential for lifting up of green bricks and manpower at periodic intervals.

eatures: Platform of 26’ by 12’ on top without cantilever. Brick soling at top.

Storage of few thousand bricks only at the top. . Buttresses are redundant due to less width of the kiln Brick work above ground level in mud mortar. Four tie beams at an interval of 4’ startlevel.

Refractory brick Cemented trolley guide for vertical movement. Conventional stone and brick foundation.

BK o Le th slab projection removed at the to inting is a must on F

evel.

Includes buttresses. ud mortar.

ss space in the platform p.

level wi Brick work is done in mud mortar. Cement po

the joints. Option of conveyer belt for lifting of green brick.

eatures: Platform of 30’ by 19’ on top without cantilever. Brick soling at top.

20,000 green brick storage capacity at platform l Manual staircase for worker movement. Brick work above ground level in m Three tie beams at an interval of 4’ above the arch level. 5 peep-hole pipes for monitoring of fire in one shaft.

y brick lining in the main firing zone (3rd. to 9th. batch)

Angle with square bar sections used as rail section.

on 1, 2 and 3

T shaft.

n d

V

Refractoronly.

Cemented trolley guides for vertical movement. Conventional stone and brick foundation. Investment required: 6.50 lakhs (2 shaft).

Note: Optihe kiln can be seriously damaged if:

The fire is not always kept at the center of the More than permissible green bricks are stored at the kilplatform. (20,000 well dried green bricks for Option 3 anzero bricks for Option 1 and 2).

SBK option 4 E ance cost. Ample sp op. The life span for th ion of conveyer belt

nd MS staircase for green brick and worker movement.

RCC platform 36’ x 22’ inclusive of 2ft cantilever throughout

guide.

V

arthquake resistant structure with low maintenace for brick storage and movement at the te structure is assumed to be 15 years. Opt

a Features:

the structure.

45,000 green brick storage capacity at platform. Includes buttresses (walls projecting outwards in the form of steps).

Entire brick work in cement mortar. Three tie beams at an interval of 4’ above the arch level. 7 peep-hole pipes for monitoring of fire in one shaft. Refractory brick work lining throughout the shaft. Use of rail section for unloading trolley movement.

Use of C-channel as a vertical trolley Conventional stone and brick foundation. Investment required: 8.75 lakhs (2 shaft)

SBK option 5

arthquake resistant structure catering to high end brick roducers. Production of around 20,000 bricks per day from 4 hafts. Ample storage in loading platform to cater to 3-4 days of roduction. Provision of both conveyer belt and staircase for man nd material movement.

4” thick RCC platform 72’ by 22’ inclusive of 2ft cantilever throughout the kiln structure.

Approxim ,000 green br p yaround t e cantilever and the loa

Includesoutwards in the form of steps).

Entire brick work in good quality cement mortar. Continuous tie beams all around the structure at an interval of 4’ above the arch level.

7 peep-hole pipes for monitoring of fire in each shaft. IS 8 refractory brick lining throughout the inner portion of the shaft.

Rail section used as trolley track guides. Use of C-channel as vertical trolley guides. Conventional stone masonry foundation. Investment required: 15 lakhs (4 shafts).

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In association with India Canada Environment Facility

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VSBK structure options

111/9 – Z, IInd. Floor, Kishangarh, New Delhi 110070, INDIA Tel: 91 11 26890380; Fax: 91 11 26134103; Email:

smaity@devalt.org

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