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address:West Xindian Bridge in Beijing Daxing zone HuangCun
Date:2012-01-06 22:54:17
Circulation boiling roasting furnace the whole device used refractory materials were mainly 762t, castable, refractory brick, silicate
Calcium board, aluminum silicate fiber and refractory clay five categories, as well as fixed refractory anchors.
In 1, the working layer with refractory castable for a total of 351t, Venturi, cooling cyclone, fluidized
Bed cooling machine, all pipe, flue and boiling roasting furnace bottom and cyclone cone portion, for more than two or three layers.
Refractory brick by using 269t, mainly used in boiling roasting furnace, circulating cyclone, two stage cyclone separator, two Venturi
In the drier and flue.
According to the boiling roasting furnace and process characteristics of different process parameters and working conditions, work layer of refractory material for
Types and different number of. According to the use of temperature, material properties, all piping for light and heavy cast configuration
The main equipment are lined with insulation and heat insulation and refractory brick work layer configuration, so that the refractory material better energy-saving effect.
Pouring material is mainly used in the fluidized bed cooler, cooling cyclone, a class Venturi drying
Device of main equipment such as the top and all piping and flue inside.
Thermal insulation brick insulation brick shared 41.76t, mainly used in the fluidized bed cooler, drier and a Venturi two stage cyclone
Separator. Calcium silicate board calcium silicate board shared 97.5m3, 50mm thickness and thickness of 30mm two specifications, mainly used in boiling
Teng roasting furnace, circulating cyclone, cyclone and a Venturi cooling dryer.
Refractory fiber refractory fiber shared 2.5t, divided into plate, felt and blanket category, mainly used in expansion joint, expansion joint,
Bracket and into the bore and a variety of craft around the hole.
Anchor distribution and temperature, the nature of the refractory material, lining thickness, use of the site and the choice of anchor
The shape and materials concerned, there are 15 types, 40 kinds of specifications, weight of about 3000kg anchor system to furnace lining
The stress distribution and the thermal expansion thermal stress balance, extending the service life of furnace lining, plays an important role in.
1, effect and Enlightenment of the stove in the refractory material on thermal insulation material used in high temperature equipment,
Boiling roasting furnace and circulating cyclone are made of five layers of refractory material, the four layer of insulation material, thermal insulation effect is very good.
Despite the high internal temperature reaches 1100 DEG C, but the furnace body surface temperature of only 70 degrees celsius. The other portion of the two layer
Or the three layer of insulating material, so the overall thermal efficiency is very high.
Irrational structure of two level Venturi to two cyclone channel high 2.5m, width 1.7m thickness is only 180mm, brick
The two layer ( 65mm and 115mm ), although provided with anchor, but was still unstable, use less than a year off brick.
Then in the overhaul of the internal surface area of improvement, keep constant, constant height, shell broaden 115mm, refractory brick thickening
115mm, instead of 65mm and 230mm refractory brick insulation brick. After the reform of the operation effect is good.
Brick joints and expansion joint of the furnace refractory brick is larger in height on each interval 3.5m left 25mm heave
Expansion joint, according to China's refractories line change, at 1450 degrees C, insulation 2h, linear shrinkage is generally 0 ~ 0.2%,
Thermal expansion coefficient of 300 to 400 degrees C for 0.1%, the 25mm expansion joint in.
In 2 years, two cyclone refractory brick made of thick 115mm wear to local is only 20mm, level two Venturi
In the refractory wear only to about 70mm, connected aisle refractory brick has been replaced two times, here only for selected brick strength
34MPa, described here does not accord with the technological requirements of refractory brick. In addition the flow velocity, the scour strictly alumina,
Should use the high strength wear-resistant tiles, therefore in high aluminium aggregate add wear-resistant aggregate, in order to enhance the wear resistance of refractory brick.
Wear-resistant aggregate such as corundum, tabular corundum high refractoriness, creep, high density, good thermal shock resistance, wear resistance
The advantages of good, in the parts of the trial of high strength wear-resistant tiles, can significantly improve the lining service life.