SU727963A1 - Loose material roasting furnace - Google Patents

Description

(54) FURNACE FURNACE FORM BULK MATERIAL

one

The invention relates to the production technology of building materials obtained by burning, for example, expanded clay, lime, fireclay, and can also be used in magnetising roasting of ores.

Known stove PL kiln haydite, in which the pop is installed on the shock absorbers and vibrates, and the burning is burnt with radiation burners i.

In this furnace created the necessary. firing temperature conditions.

The furnace has the following disadvantages.

poor mixing of the material in the layer moving under vibration, especially when the layer is thicker than the diameter of the firing pellets; even with a relatively thin layer, lumps or granules may slip on the floor without turning over, which creates a non-uniform quality - the top of the layer or granules burns and the bottom does not warm enough

the need for significant costs

the amount of energy in the hearth vibration, the mass of which is significant;

fragility of continuous vibrated lined hearth:

increased abrasion of the material during vibration and the furnace floor.

A furnace for the heat treatment of granulated copper concentrate on an inclined gas distribution grid 2 is also known. In order to ensure 0. The VIA of forming the layer and adjusting its height above the grille parallel to it is a frame with rotating vanes mounted across the moving layer and controlled by

5 levers, with all the blades making a simultaneous rotation.

Claims (1)

The disadvantage of this furnace is the absence or slight mixing of the layer in height, which causes a large heterogeneity of the temperature of the granules in the layer, which negatively affects the quality of the product. In the event that the formation of product quality, for example, expanded clay, occurs in a narrow temperature range (about 50 ° C), with a baseMeasured With temperature cutting across the thickness of the layer, the furnace cannot be used, 11el of the invention is an improvement in the quality of the processed material, by - y- InDeNN his unmeshmitzani. This is achieved by the fact that in a furnace containing a loading device, inclined under, heating devices 1; placed in the furnace arch, are made stepwise from separately assembled plates installed with an angle of M 30 30 ° 4 L H-30 ° relative to the horizon where H - ANGLE on the slope of Yes to the horizon, equal to the angle of friction of the material. In FIG. 1 shows the proposed oven, longitudinal section: in FIG. 2 - the same plan. Furnace for burning loose bulk material contains a hopper 1 for loading the raw material, a heat exchange device 2, a feeder 3. The furnace has a fencing 4, which is used to keep the walls and walls. Under the fence there is a stepped under, consisting of plates 5, fixed on shafts 6, supported on bearings 7, fixed on frame 8. Shafts 6 are connected with the help of pins 9 and strips 10 with a Krivoschip and driven drive 11, which has an engine and gearbox. Each plate is installed with the ability to rotate relative to the horizon by the angle P + 30 ° L 4 H -3.0 °, where H is the angle of the butt, equal to the angle of friction of the material. Heating devices are located in the vault, for example burners 12, connected to the oxidizer and fuel lines 13 and 14, respectively 15. There is a channel 15 for the removal of combustion products. The furnace works as follows. Burners 12 heat the furnace to the required temperature, then turn on the feeder 3 and the material from the hopper 1 through the heat exchanger 2 nocTjmaeT JQ to the plates 5 of the furnace, making periodic oscillatory movements, such that the angle of inclination of each of the plates changes periodically from 1SHYUSHNGODMYSHYShlSHR9 zZHCHEN Since the minimum angle is smaller, and the maximum angle is greater than the angle of friction of the material under the furnace, the last iodine is then delayed on the plate, then poured from it to the lower one, the passage of the follower From the top to the bottom of the inclined hearth. The rate of movement of the material is adjusted by changing the period of oscillation of the plates when the speed of the engine is varied. Heating of the material is carried out using burners 12, located directly above the layer of material. The flue gases, heating the material on the plates 5, are sucked through a dense layer of material in the heat exchanger 2 and removed through channel 15. The advantages of the proposed furnace are as follows: uniform firing and 1 very homogeneous Kepatli3HTa granules, since the material is placed on the plates with a layer no more than 5 cm: possibility Creation of any temperature regime in the hearth of the furnace due to the availability and uniform placement of the burners in the fixed roof of the furnace, the possibility of firing according to the principle of thermal shock, i.e. very fast heating, in which the quality of expanded clay and performance are particularly high; high removal of products from one m of the furnace; low consumption of materials — low weight of moving elements, which determines low operating costs for driving moving elements; The accuracy of the lining works and repairs, since the plates are a flat element, are easily removable and. can be replaced as needed separately; simplicity of design and the ability to manufacture it in non-specialized plants. Claims Furnace for firing a bulk material. containing a loading device, inclined under, heating devices, p & tight in the roof of the furnace, depending on the fact that, in order to increase the quality of the material being processed, under the stepped one is made of separately assembled-plates installed with the possibility of rotation relative to horizon angle H 4-30 sk. 4 H - - 30. Where - the angle of the ass to