USRE4380E - Improvement in grinding and amalgamating ores - Google Patents

Description

ga'mating Ores.

Reissuad May 16,1871.

THOMAS BATES; Improvement in Grinding and Amal No. 4,380.

fiinitdr $liltr5 THOMAS BATES; or CENTRAL cITY, COLORADO TERRITORY.

Letters Patent No. 102,476, dsted liay 3, i870; reissue No. 4,380, dated May 16, 1871.

IMPROVEMENT IN GRINDING AND ANIALGAMATING ORES.

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Be it known that I, Tnoms BATES, of Central City, Colorado Territory, formerly ofPinos Altos, in the'connty of Grant and Territory of New Mexico,-have invented Nature and Objects of the Invention.

The object of my invention is to provide a simple and ediclent arrangement of means for receiving the tallings of gold and other oresvfrom the battery, or ore crushed by any suitable mean and to pnlverize, scour, and burnish the same, ready or separating; and

Secondly, to provide a simple means for amalgamating or separating the gold from the pulverized mass by the use of quicksilver.-

The invention comprises- First, a process for pulverizing, scouring, and burnishing the gold contained in crude ores alter it has been crashed in a battery, or by other suitable means.

Second, a process of amalgamating the gold in a suitable amalgamator, disconnected from the pulverinn apparatus alter it has been pulverized, secured, and rnished, enabling me to separate the gold from thpulverlzed ore, independent'of the pulverizing proc- 888- .Thlrd, providing suitable mechanical devices to carry these methods into effect.

1n methods herewforeused no plan of pulverizing, scouring, and burnishing the material, independent of the amalgamating process, has been successfully employed. The Mexican arastrar crushes, pulv'erizes, and bnrnishes the gold, but does it in the same pan or pit in which the quicksilver -is used to amalgamate the gold, and the two processes are inseparable.

Stamping-mills pulverize the gold, independent of the separating method, but do not scour, polish, or burnlsh it-that is, do not free the gold from the quartz, sulphurets, or other minerals with which it is frequently allied.

My method accomplishes the pulverizing', scouring, and burnishing gold more rapidly than the arastrar, and, like the stamping-mills, pnlverizes independent olthe separating process, while, in addition, it scours and bnrnishes the gold and saves a larger percentage thereof than any other method, and at aless expense.

Description-of the Accompanying Drawing.

Figure 1 is a vertical section of the pulverizingmill.

Figure 2 is a vertical sectiou'of the amalgamator.

Figure 3 represents a plan view of figs. 1 and'2 when connected.

To pulyerizethe ore and scour or burnish the small particles of gold, 1 take two bur-stones, E F, with a suitable dress and" set, and arrange them in a similar manner to those of an ordinary grain-grinding mill, except that I do not use any casingimmediately around them, leaving their entire peripheries free for the dis! charge of the pulverized material. This burnishingmill E F I use in direct connection with a s le stamping-mill or crusher, to which it is attach by the spout A, which acts as a hopper, and also conveys the" tailings from the stamping-mill and the water necessary to be used. The mill E F maybe operated by any known motor.

Underneath the mill is a table or spout, lined with quicksilver, placed at an angle, as seen in fig. 1, to save the gold as the ore passes from the mill, and this table may be used to conduct the material to the amalgamator.

My amalgamator is a circular vessel, H, the interior of which is made of amalgamating-plates, prepared in the usual way.

I is a horizontal rake or stirrer, which works upon a vertical axis, andis made to revolve by a belt, K, running upon pullcys P P;

- P is a. driving-pulley, which is here shown'connected to a driving-shaft, L.

N is a spout for'carry'ing 0d the residuum.

Claims.

I claim as myinvention- 1. The continuon process of pulverizin'g, scouring, and amalgamating by means of the grinding-mill E 1 and anialgalnator H, connected by suitable spouts to each other and to the battery, substantially as herein set (01th.

2. The combination of the table or spout A, grinding-mill E F, table G, amalgamator H, stirrer I,when constructed, arranged, operated, and adapted for application to and use with a battery, all substantially as specified.

THOMAS BATES. [L. 8.] Witnesses:

Onssn Wrrrmow,

M. MOLAUGHLIN.

e tailings of an ordinary battery.

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