SU1198028A1 - Heat-insulation of glass-making furnace arch - Google Patents

Abstract

THERMAL INSULATION OF THE GLASS OF THE GLASS-CONTAINED OVEN, containing a layer of sealing plaster, quartz sand, lightweight, kaolin fiber and a metal sheet, which is as follows. By the fact that, in order to improve the efficiency of the insulation, the lightweight layer is made in the form of I-blocks made of aluminum-chromophosphate aerated concrete arranged mutually perpendicularly. (L

Description

The invention relates to the building materials industry, in particular to the equipment for glass melting furnaces. The purpose of the invention is to increase the efficiency of thermal insulation. Figure 1 shows a glass furnace, a slit; figure 2 - the location of the I-blocks in the plan on fig.Z - I-block in isometric. The stove consists of a cooking basin for 1 with walls 2 of electrofusion refractory and thermal insulation 3,, bottom 4 of ceramic bars and thermal insulation (not shown) and located above the cooking basin 1 of the hanging walls 5 with thermal insulation 6 and roof 7 The thermal insulation of the vault consists of a layer of sealing plaster 8, a layer of quartz sand 9, on top of which I-blocks 10 are laid of aluminum-chromophosphate aerated concrete, coiled ka olinova fiber 11 and a metal sheet 12. The work on the thermal insulation of the vault is carried out as follows rdke In order to heat the entire thickness of the roof, the asbestos plates temporarily removed from the charge are temporarily placed. Asbestos slabs are installed, they are then sealed with a 3-5 mm layer of refractory mortar, and a sealing coating is applied to the arch twice with a layer of 1.5-2 mm. arch from two sides in the direction from n t to the castle hang quartz sand with a layer of 20-30 mm. Quartz sand stacks mutually perpendicular to each other I-blocks from aluminum-chromophosphate aerated concrete, thereby forming rectangular closed cavities in which air is used as insulation material After a day, after a time that is sufficient for heating the blocks, they isolate the castle-quartz sand zone and the battle of phosphate aerated concrete. Then the blocks are closed with rolled kaolin fiber with a thickness of 60 mm (two layers of 30 mm each). Thereby, closed rectangular cavities are re-formed, the air in which is again used as an insulator. The kaolin fiber 82 is overlapped with metal sheets (mainly aluminum, 1.5-2.0 mm thick), forming a screen that prevents the fiber from dusting with the charge. Variant of isolation of the arch of the glass melting furnace. Isolation of the roof is made after the imprinting and welding of glass mass, when the outside temperature of the roof reaches 250-300 C. The necessary condition for thermal insulation of the roof is to thoroughly seal the roof. The vault is coated with a sealing coating of a thickness of 2-3 mm. The sealing of the arch is made with a dinas (zircon) solution. The work of insulating the roof is completed in the following order. The surface of the roof is temporarily closed with an asbestos sheet or cloth to warm the roof over the entire thickness, then before heat insulation the asbestos sheets are removed and a sealing thickness of 1.0-1.5 mm is applied twice. In the direction from n t to the castle, they are covered with quartz sand (layer thickness is 20-30 mm). The vault lock is a strip of width I50-200 mm in the middle of the vault, which is insulated last of all after the day of operation of the furnace with an insulated vault. The quartz sand stacks mutually perpendicular I-beam aluminum-chromophosphate gas-concrete blocks, thereby forming closed rectangular cavities, the air in which will be used as a heat insulating material. I-blocks are laid on rolled kaolin fiber (60 mm thick). kaolin fiber has metal sheets (aluminum, 1.5-2 mm thick) and insulate the lock after a day. The table shows the properties of thermal insulation. The use of the proposed thermal insulation of a glass melting furnace allows one to save a deficient refractory material (lightweight dinas brick), reducing the load on the arch by 2.4 times. The creation of air cavities increases the efficiency of thermal insulation.

Characteristics of the material

Kaolin fiber brand VKR-1

Seeming density, kg / m 600

Maximum temperature

long-term operation, from 1500

Compressive strength, MPa

Heat conductivity coefficient, W / (m ° s)

100-150

1100

2.5

0.163 + 0.00028-4 0.034 + 0.000261

P

eleven

Rig. i

Yu

fx

Riga.g

Claims (1)

(5 * 0 THERMAL INSULATION OF THE GLASS OF THE GLASS FURNACE, containing a layer of sealing coating, quartz sand, light weight, kaolin fiber and a metal sheet, it is required that, in order to increase the insulation efficiency, the light weight layer is made in the form I-blocks made of aluminochromophosphate aerated concrete arranged mutually perpendicularly.