SU1433927A1 - Method of producing claydite - Google Patents

Abstract

The invention relates to the production of building materials. L can be used in the production of expanded clay during the firing of pellets in a rotary kiln with a periodic supply of dusting powder. To reduce the bulk density of haydite and reduce the consumption of dusting powder, a curtain of bakeable material is created over the cross section of the softening zone of the rotary kiln, and the dusting powder is fed in 40-90 seconds for 3-5 seconds. The resulting claydite is characterized by a bulk density of 455-470 kg / m; The specific consumption of the opaque powder is 0.29-0.34% by weight. 2 ill., 1 tab. ; c (L

Description

4; ib

with so with so

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to

1st

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The invention relates to the production of building materials and can be used in the production of expanded clay during the firing of pellets in a rag; ayu kiln with a periodic feed of powder of its powder.

The purpose of the invention is to reduce the bulk density of claydite and reduce the consumption of sometimes dusting powder.

The method of making claydite involves burning granules in a rotary kiln and periodically feeding powdered powder into the softening zone of granules, with the cross section of the softening zone of the rotary kiln being created for 1 weight from the calcined mother: -90 seconds for 3-5 seconds. In FIG. 1 shows a device for implementing the above method; in fig. 2 is a section A-L in FIG. The method is carried out as follows.

: In the softening zone of the surface I shell of the granules (temperature 950-110 0) of the rotary kiln 1; the liners are made in the form of nozzles 2 of different lengths with a varying angle of inclination to the tangential circumference of the furnace; ensuring that the material is lifted and rolled from the slope by turning the drum through an angle of 95-205 The variable inclination of the nozzles, their length and location, provide for the periodic formation of a curtain in this zone of the furnace. When reaching: blades defined position material 3

completely poured from their surface

ITH, due to which the curtain i is formed. The inclusion of the dispenser of the threshold 4 and of the fan 5 is carried out periodically with the help of a relay, and.,. at the moment: the moment of rotation of the drum through the angle 95-: 205., When the fan is turned on and before: the mash the powder enters the pneumatic

 system 6 and further is directed to the calcined layer. Falling from the nozzle of the granule (razm gchenk), it has been over the top - HocTbj has reacted with sweat): oven powder bases. A part of the oroplus, is peeled in the layer, and the nozzles shuffle intensively from the granule-ffl:

B

It promotes a more complete and uniform surface treatment of the granules by a powder.

II p and me. The sanding-shale shale of the Snezhnskoye deposit is fired on a 40-meter rotary kiln of the Snezhnsk pilot plant of expanded clay gravel. The kiln loading is 4.5 shale fractions of 5-10 mm.

When working in this way, feeding the powder to the layer of granules is carried out periodically when the material is raised to the angle of its repose at the angle of rotation of the drum 95-205. The feeder is fed periodically with an interval of 45-90 seconds with a duration of 3-5 seconds.

As can be seen from the table, the proposed method allows, due to the intensification of the surface treatment of the granules by the powder, to reduce the bulk density of the claydite by two marks, to reduce the consumption of powder to 0525-0 by 27% versus 0.40% by weight of the raw material according to the known method.

When the drum rotates through an angle of 95 ° and the material is raised on this arc to the angle of its natural slope, a curtain of material is formed with a softened surface on which the powder is deposited, i.e. meaning-gelOnO; tenfold, the contact surface of the softened envelope of the granules with the sprayer carried away by the flue gas is increased.

Claims (1)

Invention Formula The method of making claydite, including burning pellets in a rotary kiln and periodically feeding: 1 powdering powder into the softening zone of the granules, which is different in temperature, in order to reduce the bulk density of the expanded clay and reduce the consumption of powdering powder, create a curtain from the burned kiln across the rotary kiln softening zone the material, and the supply of dusting powder is carried out periodically after 40-90 seconds for 3-5 seconds. i05 vP. r Compiled by V. Obraztsov Editor I. Segl nik Tehred M. Didyk Proofreader G. Reshetnik Order 5511/25 Circulation 594 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Subscription