RU1796246C - Method of potassium ore grinding - Google Patents

Abstract

SUMMARY OF THE INVENTION: Potassium ore is milled in an inertial cone crusher in a wet milling mode at a flow rate of mother liquor supplied under pressure directly to the crushing chamber, determined from the ratio: K alkali ore. U- 1 MM I, M3 / H, where Alkali consumption of uterine liquor m3 / hour. Orudes - initial ore consumption m3 / h, у - 1 - finished grade content - 1 mm in the initial ore, fractions of units, I - crushing degree, calculated based on the ratio of the average piece size of the initial ore and the finished particle size for enrichment , K - conversion coefficient obtained experimentally, equal. In the wet grinding mode, the mother liquor supplied under pressure promotes the rapid flushing of small particles on the surface of the inner cone. This facilitates the rapid passage of the finely prepared particles through the crushing chamber, providing an increase in crusher productivity. 1 ill. (L

Description

The invention relates to enrichment and can be used in potash processing plants.

A known method of grinding potassium ore to flotation size, in which the mined potassium ore is crushed in a cone-inertia crusher in one stage in the wet grinding mode (autosw. Application No. 4826102/33, class B 02 C 3/02. 1990 )

The disadvantage of this method is the low degree of crushing and low selectivity of ore destruction, in addition, crushing and grinding are carried out according to a multi-stage scheme in different workshops of the flotation factory.

The purpose of the invention is to increase productivity.

The goal is achieved in that in the method of grinding potassium ore by feeding it together with the liquid to a cone-inertial crusher, the mother liquor is used as liquid in the amount determined by the following ratio:

Lash of U Uruda

where alkali is the consumption of uterine liquor. m3 / h

OREUD - consumption of ore supplied to the destruction process, m / h.

the γ-content of the finished class is 1 mm in the original ore, fractions of units.

K - conversion coefficient obtained experimentally, equal to,

Vj

Yu Oh

ke oh

. The invention is illustrated in a flow chart of a process.

When the cone-inertial crusher (CID) is operating in the wet mode, in which a saturated saline solution is supplied under pressure to the crushing chamber, which contributes to the rapid washing out of small particles on the surface of the outer cone, the ability to quickly: pu pb: xy1: | with d e n and: | o ::. m 5te r-iala; Cher.ez; crushing chamber. With this you can achieve a rare skill

(see table 4). .. -; - - -: -. I. :: :: 2 Know the necessary value of the degree of crushing, you can choose such a flow of matrican alkali (brine) according to the formula, in which the maximum maximum constancy of the inertial drift ILKY is achieved. K;::

 h From this it can be seen that, for the destruction of:;} stm init ore, it is advisable to use one-stage moray destruction

: (W :.

; AL MEDIUM VALUCHINA Kusya 12 GLM; .

YauDu Yazemolchaytz wet method 8

:. About s; WK as per technical specifications;

kam;: ys of the used pilot L-orebod- in accordance with the described (with a minimum of 1 roundness of the initial piece; do not exceed 50 mm, the initial ore was previously destroyed in a closed

50 mm grinding cycle on a jaw crusher .:

The granulometric characteristics of the destruction products are given in Table. 2-3. The condition for the experiments and laboratory equipment:

1. Screening, classification was carried out on a laboratory inertial screen with a replaceable GIT 2.5 grid. 2. Preliminary excavation of large classes - Laboratory Lacquer Crusher

schds% 1, b .-: -: (, .--;,: / -,; ....:

3. Grinding - experienced Kbnus-inertia crusher KID-300. . 4, Contacting H.fc.p. inside "AID crushing amers ,. ; - ;; : - /, ..-. 5. Productivity Efficiency for various costs, MSR determined by the method of Mechanobra. .H- .x.: ..; With the use of KYD, the following is achieved .., ... О Г -. 1 w. , - - .. -. -;

drink; crushed 31.5, and the maximum productivity of the RID is achieved with the consumption of the mother liquor supplied to the destruction, calculated and & ratio 1;

NII. .; ; j; t; &: i: - :: 1 -: i-V o- 4- - -: - ..

; Ecological effect1 (it takes account of the elimination of environmentally polluted nodes — dry shots; shredding — screening; reduction of transportation costs; use of BbiCoKonpoMSBp flHTeflbHoro, selectively grinding equipment. ::

; - bromula and sampling C Method for grinding potassium ore pu; Its introduction together with the liquid is an inert | inertia-crusher, about t l and, moreover, with the fact that, in order to increase productivity, the amount of mother liquor is used as nflKOcf,; Nёrodёchlomom the following ratio: l,.; ;:; Oshvloka K at Yuruda,:; -; where the latch is consumed by the uterine lye,

..m3 / h;:; - ;. i.vv::: .., ..-. :: ;;;:

ORUNDS - flow rate entering the destruction process, m3 / h;

y - the content of the finished class is 1 mm in the original ore; share units;

K is the converted coefficient obtained experimentally, equal to,

G is the degree of crushing, calculated from the ratio of the average piece of the initial ore and the finished particle size for enrichment.

An example of execution Silvinitovy ore of the following particle size distribution

;: l:.

Granulometric characteristics of the crushed product of the prototype. ; .

Note. The size of the average crushed piece dt - 3.6 mm

Dtcp.hcx 12 odr dicp.flp. 3.6

The crushing size 1drobl.

. :. -: -; ,.; V .-. , .-. -; : V .; .-: - g-- ..; -:; -.-; : -:. U Table 3 Granulometric characteristics of the destroyed product rio the proposed method

Note. The size of the average disrupted particle is 0.38 mm. .Res. 1 - 12. d bit 0.38

Resr.

31.5

Table 1

shann

31.5

Performance cone-inertial crusher in various modes

The original ore.

Screening 50mn

MpoSjietii / e Vchekovoi f dfloffanffe

Lj

floSepowff classification

Table 4

m /

(KM