SU576507A1 - Muffle furnace for calcining earthenware - Google Patents

Description

one

The invention relates to the building materials industry, in particular, to kilns for ceramic products, for example, floor tiles, acid resistant tiles, etc.

Limes of a furnace for heat treatment of products containing a vertical working chamber for firing and devices for burning fuel, in which the coolant is fed directly into the working chamber. In furnaces of this design it is possible to obtain in the volume of the working chamber the required firing temperature conditions and controlled atmosphere necessary for the production of high-quality products when burning various types of gaseous and liquid fuels.

The closest technical solution to the present invention is a muffle furnace for firing ceramic products, and a vertical lined housing, a muffle inside it, and devices for burning fuel, mounted on the furnace root.

The purpose of the invention is to increase the productivity of the furnace and obtain high quality products.

This goal is achieved by the fact that the furnace is equipped with horizontal and inclined partitions, fixed by a muled of the muffle and the body and forming a spiral

a channel for the passage of gas, and devices for the need of fuel are installed by meleda partitions. FIG. 1 shows a muffle furnace, a longitudinal section; in fig. 2 - section A-A of FIG. one.

The furnace contains a lined case 1, a muffle 2 forming a vertical working chamber 3, and a muffle channel 4, devices 5

for burning fuel and devices 6 and 7, respectively, for feeding and unloading products 8. Between muffle 2 and body 1, horizontal and inclined partitions 9 and 10 are fixed, forming a spiral muffle channel 4 for the passage of gases. Between the partitions 9 or 10 in the masonry of the case are built vloty 11 for supplying fuel to the channel 4. Windows 12 are used to extract flue gases. When the furnace is in operation, the products 8 are fed through the device 6 into a vertical working chamber 3, where they are stacked one on another, to form a flat pillar. The descending products creep heat from the muffle 2, which separates the chamber 3 from the channel 4 and provides hydraulic separation of these volumes.

Liquid or gaseous fuel is supplied by the devices 5 through the ports 11 for removal in channel 4. The flue gases are discharged through the window

Claims (1)

12 in the furnace body. The fired products are discharged using the device 7, designed to simultaneously support and reduce the vertical column of products 8 at a given speed. Controlling the flow of fuel through devices 5 located in different horizons of the muffle drip 4 makes it possible to obtain the desired temperature curve for firing products along the height of the working chamber. The furnace may have several flue gas windows. The proposed design of a muffle furnace reduces the specific fuel consumption by reducing environmental losses and more fully utilizing the heat of flue gases, improving the quality and reducing the cost of products, as there is no need to add expensive additives to the mass to reduce the firing temperature, the maximum of which limited by use of transport devices. The invention of a muffle furnace for burning ceramic products, comprising a vertical lined body, a muffle placed inside it and fuel combustion devices mounted on the furnace body, characterized in that, in order to increase the productivity of the furnace and obtain high-quality products, it is equipped with horizontal and inclined partitions fixed between the muffle and the case and forming a spiral channel for the passage of gases, and devices for burning fuel are installed between partitions. (+) L .eleven 2