FR421751A - Method and apparatus for grinding gold-bearing quartz and other ores or hard substances - Google Patents

Method and apparatus for grinding gold-bearing quartz and other ores or hard substances

Info

Publication number
FR421751A
FR421751A FR421751DA FR421751A FR 421751 A FR421751 A FR 421751A FR 421751D A FR421751D A FR 421751DA FR 421751 A FR421751 A FR 421751A
Authority
FR
France
Prior art keywords
ores
hard substances
bearing quartz
grinding gold
gold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
George Johnston
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR421751A publication Critical patent/FR421751A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
FR421751D 1910-10-24 1910-10-24 Method and apparatus for grinding gold-bearing quartz and other ores or hard substances Expired FR421751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR421751T 1910-10-24

Publications (1)

Publication Number Publication Date
FR421751A true FR421751A (en) 1911-03-04

Family

ID=1464769

Family Applications (1)

Application Number Title Priority Date Filing Date
FR421751D Expired FR421751A (en) 1910-10-24 1910-10-24 Method and apparatus for grinding gold-bearing quartz and other ores or hard substances

Country Status (1)

Country Link
FR (1) FR421751A (en)

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