SU90842A1 - The method of obtaining without calcined white cement from waste in the processing of spodumene lime method - Google Patents

Description

The invention relates to the production of white cement from waste material during the processing of spodumene by the seed method.

The special feature of the proposed method is that, as a raw material, cement is used as a source of raw materials and; la | M, which is subjected to drying and subsequent grinding.

When lithium is extracted from a spodoumep, a significant amount of the waste of OPCh, which is a 1-unit-white white mass, is heard. The amount of pglama equipment1 by Ko, -: H4L4-TBo, is now introduced into the spawnman.

White sludge is obtained as a result of short-term processing of ground cakes, obtained by production of steam above thousand degrees.

Without donolpelea-south help after sup1kp i1l; Mne possesses activity, ppm until the residue is about -7% P1 L1 90, it awakens the activity of the flame, expressed in the temporal resistance of the samples to compression in 55 / slushgüle B0 | “1I (7 days on the air, but no ice 21 days in water) for samples from a 1: 3 solution (sand).

The introduction of some additives enhances the actuality of the Imam. Hins may be recommended as additives. Household gran-nilirovi; th nytak so. together with giisom, pumice, baked clay, 3o, ia.

Mixtures obtained by joint grinding of 1il ma and additive with a residue of 5--7% on sieve X 90 for a solution {sand - 1: 3). The npci tests on comp compression give a time of resistance of 78-95 kg / cm after 28 days of snoring.

The process of manufacturing white pemepta consists in the short-term treatment of cakes with water, sugyk of receiving-up plum at 200-300 °, dosing of activating additives in the subsequent grinding to a residue of 5-7% screen no. 90.

No. 90642

The composition of the sludge white cement components may be as follows: AienaoBaiH:

heads: limes with - 37: 3

was, m: pumice: gypsum 94; 3; 3

sludge: clay burned: gig1s 87: 10: 3

slime: ash: coal: pi.ps 87: 10: 3

i1lam: blast furnace slag: plaster 87: 10: 3

The quality of the cement, obtained on the basis of snodumenovogo N1lama ,. but activity corresponds to the mark “75 at high gi | dr: avl1ichnosti.

Cement obtained by the method described above can be used as a solvent (for solutions, and also as decorative for exterior finishing.

Subject invention

Claims (2)

1. A method of obtaining unburned white cement from waste during the processing of spodumenes by lime processes, about and the like. that for this purpose spodumenic 1-flame is used, which is subjected to drying and after the next grinding. 2. Acceptance of the method according to claim 1, characterized in that, in order to improve cement activity, lime activating additives are introduced into the raw mix.