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
GB21209/26A
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.)
HANS GRUNWOLDT
Original Assignee
HANS GRUNWOLDT
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 HANS GRUNWOLDTfiledCriticalHANS GRUNWOLDT
Publication of GB258246ApublicationCriticalpatent/GB258246A/en
B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
Landscapes
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
258,246. Grunwoldt, H. Sept. 11, 1925, [Convention date]. Silica is purified by treatment with a mixture of sulphuric and hydrochloric acids, together with oxalic acid or a salt thereof, the process being effected in the cold or with application of heat.
GB21209/26A1925-09-111926-08-28Process for the removal of impurities from minerals and rocks
ExpiredGB258246A
(en)