SU1219891A1 - Drum for heat treatment of loose materials - Google Patents

Description

This invention relates to a technique for drying bulk materials in a rotating bar of abanio and can be used in the cement, metallurgical and other industries.

The purpose of the invention is to intensify the process when processing the material in the drum, which is set obliquely in the direction of the unloading device.

FIG. 1 shows a drum for the material under treatment. The rotation speed of the drum is necessary.

 25G

Moving along the drum of its inclination, the machined one gets from the cylindrical conic h, and moreover to the conic

lovoy processing of bulk materials; On the th material falls (Fig. 3-5).

20

FIG. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a cross-section of the FIG. one.

The drum contains a cylindrical part 1, a conical part 2, the loading 3 and the unloading 4 devices, the drive 5, the support rollers 6, the nozzle 7 for introducing the coolant. The drum has an inclination angle of 15-25 ° depending on the size of the dried material particles, and the lower forming 8 of the conical part 2 has the same inclination angle with its cylindrical part 1.

The drum works as follows.

By means of the drive 5, the drum is rotated, the material being dried is continuously introduced through the loading device 3, and the heat carrier is fed through the nozzle 7. The material is unloaded through the unloading device 4. The drum rotation frequency is selected as follows.

To retain on the inner surface of the drum with a radius R of particles, therefore, the rotation speed of the ban should not be greater than

,

thirty

25f

5 Hence the speed limits of the proposed design.

V1f.

25G where n number of turns b

give me a sec;

Kj is the inner radius of the cic part of the drum; B 2-min radius to

drum parts; g is the acceleration of the force of tin K; it is constant 3.14. When conducting an experimenting model of a drum in scale, it was found that the movement of bulk material along the drum at an inclination angle of up to 25 °, depending on the size and humidity of the material.

the material being rolled requires a minimum speed of rotation of the drum, rev / s:

 25G

Moving along the drum due to its inclination, the processed material falls from the cylindrical part 1 into the conical part, moreover in the conical part 2

material drops (Fig. 3-5).

Therefore, the rotational speed of the drum should not be greater than

,

25f

Hence the limits of the rotational speed of the drum of the proposed design.

V1f.

25G where n is the number of revolutions of the drum

give me a sec;

Kj is the inner radius of the cylindrical part of the drum; B 2-min radius conic

drum parts; g-acceleration of body strength; K-permanent 3.14. When conducting an experiment on a current drum model on a scale of 1:10, it was established that the movement of the processed material along the drum occurs at an angle of inclination of the latter from 15 to 25 °, depending on the particle size and moisture content of the material.

Aa

Bb

Bb

Compiled by Y. Martinchik

Tehred I. Veres Corrector A. Zimokosov

Circulation 635 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

DRUM FOR HEAT PROCESSING OF BULK MATERIALS, containing a rotating cylindrical conical housing with loading and unloading devices located respectively at the ends of the cylindrical and conical parts of the housing, characterized in that, in order to intensify the process when processing material in a drum mounted obliquely towards the unloading device, the lower the generatrix of the conical part of the body has the same angle of inclination with its cylindrical part. material to be rolled requires a minimum drum rotation speed, r / s: