US1457708A - Composition of matter - Google Patents

Description

Paaaa June s, 1923.-

UNITED ST rnocnssns, me, or san FRANCISCO, cauronma, a

NEVADA.

Io Drawing.

To all'whomitmay concern:

Be it known that I, ROYER LUGKENBACH, a citizen of the United States, and a'resident of the borough of Brooklyn, county of '5 Kings,- and State'ot New York, have invented a certain new and uwful Composition of Matter, of which the following is a specification.

The invention relates to a composition of matter capable of use in the concentration of ores by flotation, and has for its objects the production of a cheap and efiicient mineral athering and frothing material .which e made up in concentrated form for v be introduced directly into the pulp in the fiotation apparatus, which will produce a voluminous, viscid and stable froth capable of supporting a maximum amount of mineral, and which may be shipment, which may easily separated from the concentrate and p recovered.

. These and further objects will more fully appear in the following specification and claims.

The present invention is based on the discovery that certain phenols, or hydrobenvzenes have powerful mineral selective and gan e repellent properties, and that when com ined with a solid pyrogeneous bituminous material, such, for example, asa vegetable pitch, will-dissolve the latter, and this solution, when treated-with'an alkaline frothing agent, will adhere to mineral particles and also produce bubbles in the pulp,

which bubbles will attach themselves to the coated particles and raise them-to the surfaceof the pulp.

The phenol-bitumin solution, which may be termed a bituminol, is water repellent to a 40 high degree,'is in acolloidal condition and will have a non-wettable mineral particles in the pulp, and will repel the wettable gangue particles.

The extremely fine division of the solid orcolloidal particles of the bituminol will be conducive to economy otmaterial in that eachatom, as it were, of the be attracted and attach itself to a mineral particle, and will attract orbe attracted by ghe bubbles and rise with them to the surace.

The preferred materials for use in carrying out the process of the invention are rosin pitch, carbolic acid, and an alcoholic Application filed February 7, 1920.

.the solution may high preferential aifinity for the bituminol will conroaa'rron' or oomrosrrlo'n' or MATTER.

Serial No. 357,043.

alkali, or acetone. or both. The pitch, in pulverlzed condition, is dissolved in carbolic acid until a thick, dark brown liquid results. This liquid is waterproof and will float on water in the form of a film. The thick bitumin-phenol is of thin syrup by the addition of an aliphatic compound which may or may not'be rendered alkaline. If an alkaline aliphatic compound be used, an alkali, such as caustic soda, may and one or both may be employed.

The alkaline alcohol when used may be thinned to the consistency be dissolved in alcohol or acetone compounded by dissolving 5 grams of caustic soda or of caustic potash in 1 liter, more or less, of alcohol either ethyl, methyl or a mixture of the two. may be made bydissolving 5 grams of caustic soda'or potash in about 1 liter of acetone.

As an example of proportions in the reagent, 5 grams of pitch may be dissolved with stirring in 20 cc. of carbolic acid and to be added 5 cc. of alkaline alcohol and 5 cc. of alkaline acetone, and to the mixture is added approximately 1 liter of warm water. This forms a stock solution which may be added to the pulp in proper proportions to be determined by the character of the ore.

Instead of equal parts of alkaline alcohol and alkaline acetone, 10 cc. of either-of those solutions may be employed in the stock solution.

The reagent may be made up for shipment in concentrated form by omitting the water, which may be added on the job. The water in the stock solution'is not necessary,

- but is employed in order that the small proportion of reagent necessary to efi'ect flotation may be more easily measured. If a larger quantity of water be employed in the stock solution the reagent will necessarily be weaker and may be more roughly proportioned to the water-of the pulp,'or to the ore, than if the stock solution were more concentrated. v

It has been found that the process may be successfully carried out by using'from 2 to 10 cc. of the stock solution wherein 1 liter of water was employed, in 4: liters of pulp water.

*It is be understood that the alkaline solution may be greatly concentrated whereby much smaller projortions mav The alkaline acetone he used in the stock solution. A. 10% alkaline solution in water may be made bath.

Instead of using an alcoholic potash in the stock solution, alcohol alone, in approximately the same proportions may be cmployed, and when so compounded the solution will have an acid reaction.

The bitumin phenol mixture possesses gathering and frothing properties and may be utilized in the process without the addition of other materials, but when so used it would, because of its Water repellent qualities, be necessary to beat it into the water before the pulp is formed or placed in the flotation apparatus, as is the oil in the prior processes. I v

The addition of the alcohol or acetone either alkalized or not, is for the purpose of emulsifying the mixture whereby the latter will mix with the water of the pulp without previous treatment.

While vegetable pitch is the preferred active material it is to 'be understood that rosin or other resinous materials may be employed in approximately thesame proportions.

The stock solution may rectly into the flotation apparatus Without preliminary mixing with the water of which the pulp is to be formed thus reducing operating expenses.

Rosin pitch, the preferred active gathering material, while a rosin derivative is not rosin, nor is it a resin. It is one of the residues of the distillation of rosin (colophony). It is possible that distillation of other resinous substances such as wood, tar, copal, lac, etc. may produce rosin pitch. r

It has been found that when operating in certain ores, the mineral gathering and.

frothing properties may be enhanced by the addition of a small quantity of ordinary glue or gelatin to the mixture. The glue or gelatin is preferably dissolved before it is add ed to the mixture. It has been found that by dissolving, approximately 1 oz. of glue or a like amount of gelatin in 1 quart of water a solution suitable for use in the flotation process may be secured. When the glue water is employed, the alkalined alcohol and acetone may be omitted, or the glue water may be used in addition phatic compound.

As a test, a mixture of 5 grams of pitch dissolved in 20 cc. of carbolic acid, and to this mixture Was added 40 cc. of the glue Water described above. Of the complete mixture 5 cc. was added to about 3 quarts of tap water. To this last mentioned mixture was added 50 gr. of a New Mexico chalcopy 011., to

rite copper ore Which assayed 2.14% form a pulp. I The pulp was placed in a Case laboratory byheating on a water he introduced dito the alkaline aliflotation machine and a. run of 15 minutes was made. The result of the test run was Concentrates. 1'? grams having a mineral content of 5.57% cu.

Tails. 33 grams having a mineral content of 0.29% cu. Extraction 88.5% cu.

The composition of matter described above. while it is particularly useful as a frothing and mineral gathering reagent in the concentration of ore by flotation, may be used for other purposes, such, for example, as a disiufectain.

In accordance with the provisions of the patent statutes 1 have described the principle of my invention,- together with the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown is merely illustrative, and that the invention may be carried out in other Ways.

The invention having been described, What is claimed and desired to be secured by Letters Patent is I 1. A composition of matter, comprising a pyrogeneous bitumin, the reaction product of a phenol and an alkali, and the reaction productof acetone and an alkali.

2. Acomposition f matter, comprising a pyrogeneous bitumin. the reaction product of a phenol and an alkali and gelatine.

A composition of matter, comprising a pyrogeneous bitumin. the reaction product of a phenol and an alkali and glue.

' composition of matter, comprising a pyrogeneous bitumin, the reaction product of carbolic acid and an alkaliand gelatine.

5. A composition of matter, comprising a pyrogeneous bitumin, the reaction product of carbolic acid and an alkali and glue.

6. A composition of matter, comprising the reaction product of a pyrogeneous bitumin, a phenol and an alkali, and the reaction product of acetone, an alkali and gelatinc. v

7. A composition of matter, comprising the reaction product of a pyrogeneous bitumin, a phenol and an alkali, and the reaction product of acetone, an alkali and glue.

min,

gelatine.

A composition of matter, comprising the reaction product of a pyrogcneous bitumin, carbolic acid and an alkali; and

action product of acetone, an alkali and glue.

his specification signed and witnessed this sixth day of February, 1920.

' ROYER LUCKENBACH.

Witnesses:

A. E. BENTON,

LE B

ERTHON.