SU895504A1 - Multichamber mill - Google Patents

Description

one

The invention relates to a crushing and grinding technique, namely, to mills for fine grinding of hard and superhard materials, such as cement clinker, abrasive minerals, etc.

A ball mill is known, containing a cylindrical drum rotating on roller bearings with a drive through a gear train.

The drum is divided lengthwise by a partition with a central opening into chambers of coarse and fine grinding.

The mill is also equipped with a separate sorting device, on the sieve of which the grinding products are classified, directed from the fine grinding chamber with the subsequent sieve residue return to the final grinding, i.e. over cr crushing products l.

A disadvantage of the known mill is the limited yield of fine

fractions in the finished product, a significant specific energy consumption due to the need to classify the products of grinding.

But the technical dryness closest to the invention is a multi-chamber mill, which contains a pre-crushing chamber and forms a general body of symmetry, which is located around the axis of a small-grain grinding chamber. The crushed material in the sandy mill at the exit from the pre-crushing chamber is distributed to all the fine grinding chambers, i.e. it is divided during the remnant and into parallel flows, which, after passing the fine grinding chambers, are combined in the discharge iiantpe. The ratio of the pre-grinding path to the diminutive-1 path is 0.2-0.3 (2.

Claims (2)

However, when grinding high grade clinker and hard-to-mix raw materials 3 BhK materials around the ground 1 way, the pin of the material may be sufficient for high dispersion. The purpose of the invention is to increase the grind of the bone by increasing the length of the passage, passing the material inside the mill and saving electricity by improving the balance of the mill. This goal is achieved by using a multi-dimensional mill for nominally solid and super-hard materials containing the chamber of primary crushing , conjugated with thin nomol chambers that form a common body, a g / fir mill around the axis of rotation, a loading and unloading pin of the subdivision of the subdivision of the gene from one of the Kabsep races, and all the camera ;. TOHKOio grinding is consistently connected | and: e: .s) by a means of non-transitory; x cameras and, in this case, HU; ;( (Ip- | nredvarnom crushing and fine grinding chambers is 0.08-0.14, In addition, iiiCJio calger of a thin bale. is equal to but less: at least three. In FIG. 1, the circuit (atch1, the chamber mill is shown, cut in fA-A in F1 – g 2; in fit. 2 - cut; in Fig. E; FIG. 3 - bb-section in fig 1, Cornus 1el: -1its consists of a chamber and a preliminary crushing 1 and three (3) TOjKoio grinding chambers 25 3 and 4 connected to the chamber; 1 through the flange 5 The material arrives at 1 through the boot locker 6, From each 1 through the grill 7, which separates the transition, the Q.-measure o, the material by blade 6 is transported to the grinding chamber 2 through the hole in its entrance end. At the other end of this chamber , an output IQ reglet and an outlet 115 are installed through which the material passes into the chamber of a thin nomol 3 (the direction of movement of the material is indicated by arrows), the Grate 12 separates the transition chamber 13 from the chamber 3. From it through the hole through the hole in the camera bodies 14) A. :; It enters the chamber of fine nomol 4. Thus, the NCP is successively through all the chambers, the material is cut through the output grating 15, enters the unloading pin 16, the ratio of the pre-grinding path in chamber 1 to the total grinding path in chambers 25 3, 4, is 0.08-0.14 (with a ratio of the lengths of the chambers of the preliminary and fine grinding of 0.2-0.3). The length ratio is optimal in order to achieve a final product with a maximum content of fine fractions while reducing the consumption of electrophores byTePepri-Hi. To facilitate the release of material from the transition chambers, the inlets of the leaks 11 and 14 are expanded (in the cross-section plane of the mill). The reduction in power consumption in the proposed matrix is achieved as a result of a closer approximation of the fine grinding chambers to the axis of the mill in the three-tube (compared to the four-tube) layout of the balanced part. In addition, the ratio of the length of the pre-crush path (in the unbalanced sculpt chamber) is reduced compared to the (sum; 1 bar-) fine drum length. Claim 1, A multi-chamber mill for grinding solid and superhard materials, containing a pre-crushing chamber, coupled with swelf-grinding chambers forming a common casing located around the axis of a vrasha. mills, loading and unloading trunnions, characterized in that, in order to improve the quality of the finished product and reduce the specific energy consumption, the pre-crushing chamber is connected to one of the fine grinding chambers, and all the fine grinding chambers are successively interconnected by means of transition chambers to chutes, while the ratio of the length of the pre-crushing chamber and the fine grinding chambers is OjOS-QsH. 2. The mill according to claim 1, characterized in that the number of fine grinding chambers is at least three, the information taken into account during the examination 1. French patent K2324367, class B 02 C 17/06, 1977, 2 ,, USSR Author's Certificate No. 431903, class „B 02 C 7/06, 1974 (prototype),