CS209066B3 - Coal and minerals preparation method by flotation - Google Patents

Description

CZECHOSLOVAK SOCIALISTIC DESCRIPTION / 209066 {χΜ) (Bl) R E P U B L 1 (10) C A CERTIFICATE OF CERTIFICATE (22) Enrolled 15 12 78 (21) (PV 8366-78) (61) Certificate of Approval Dependent on MS. aut. No. 205 769 (51) Int. Cl.3 B 03 D 1/00 OFFICE AND DISCOVERY OFFICE (40) Published 30 05 80 (45) Published 01 07 83 (75)

Author of the invention MISTRÍK EDMUND JURAJ prof. CSc., NOVÁKY a

HŘEBAČKA JAROSLAV ing., OSTRAVA (54) Flotation treatment of coal and minerals

The invention relates to a process for the treatment of coal and non-mineral flotation, using a new flotation agent according to the invention. No. 205,769, prepared from the oxyethylation by-products of alcohols. Coal and ore flotation is one of the most efficient treatment processes for coal, especially for the production of coke, as well as ores, debris. The flotation process is characterized by the type and amount of dosing agent and by the way it is dispensed by doflotation and flotation time, with which the performance of the flotation device and the economy of the whole process are closely related. Of course, the effectiveness of the agent is an important feature. «Flotation of coal and ores is carried out with foaming agents and harvesting effects, often top-active substances. Most often, the pre-flotation agents used in the molecule have a hydroxyl, carboxyl, carbonyl, or amine functional group. For flotation, phenol and its homologs are used, optionally mixtures, fatty alcohols and acids and their derivatives, propylene glycol and its ethers. High efficiency is not always achieved by flotation with coal and minerals, many agents are toxic and contaminate water streams and are also expensive.

The by-product of the oxyethylation of alcohols is obtained in the non-catalytic or catalytic addition of ethylene oxide to the alcohols, followed by the fractionation of the oxyethylation product to the mono-, di- and trigly-collyl ethers and the by-product distillation residue. containing water, optionally mono-, di-, triglycol and polyglycols.

Many of the drawbacks of the prior art processes of coal and mineral flotation are not found in the flotation process of the present invention.

According to the invention, the process of treating coal and minerals is effected by flotation by the action of the oxyethylation of alcohols to the mono-, di- and triglycoalkyl ethers, or with a mixture of the by-product of the oxyethylation of the alcohols and 50 to 90% by weight. mineral oil, preferably paraffin, gas, spindle, or tar oil, such that the composition is in an amount of 0.3 to 5 kg of the finished material, with a flotation time of 0.5 to 5 min. Foaming and collecting properties, by-product of alcohols oxyethylation and mineral oil, are fed into the flotation device at the same time each separately.

Many advantages of flotation, such as high efficiency and good yields of Finished material, low reagent consumption and short flotation times such as 209066

Claims (2)

SUBJECT A process for treating coal and minerals by flotation by reacting an alcohol oxyethylation by-product to mono-, di- and triglyl alkyl ethers, or with a mixture of alcohol oxyethylation by-products and 50 to 90 wt. mineral oil; preferably paraffin, gas, spindle, or tar oil; of the author's certificate no. 205 769, characterized in that the gas oil mixture. Flotation was performed under the following conditions: Flotation reagent consumption kg / t 2.0 Flotation time min 1.9 The flotation results were: Flotation concentrate yield % 85.9 Ash content in the flotation concentrate as in the dry matter % wt. 12.67 Ash content in flotation tailings as in the dry matter % wt. 72.16 OF THE INVENTION in a quantity of 0.3 kg to 5 kg per ton of flotated material, at a flotation time of 0.5 to 5 min. ¹ 2. The method of flotation of coal and minerals according to claim 1, characterized in that the substance with foaming and collecting properties, the by-product of the oxyethylation of alcohols and the mineral oil, are simultaneously dosed separately during the flotation.