GB/T 21236-2007: Silica fume from electric-furnace

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Scope

This Standard specifies the designations, technical requirements, test methods,
inspection rules, packaging, marking, storage, transport, and quality certificates of
silica fume products.
This Standard applies to the silica fume that is collected by dry dust collectors from
oxidized and agglomerated silica-bearing fume that is gathered by the fume hood of
electric-furnace in ferrosilicon or industrial silicon production. This product, in this
standard, is called “silica fume from electric furnace”, abbreviated as “silica fume”
(commonly known as “silicon ash”).

Basic Data

Standard ID	GB/T 21236-2007 (GB/T21236-2007)
Description (Translated English)	Silica fume from electric-furnace
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H31
Classification of International Standard	73.080
Word Count Estimation	6,671
Date of Issue	2007-10-25
Date of Implementation	2008-04-01
Regulation (derived from)	China National Standard Approval Announcement2007 No.12 (Total No.112)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the fine silica powder product brands, technical requirements, test methods, inspection rules, packaging, signs, storage, transportation and quality certificates. This standard applies to industrial silicon and ferrosilicon production, silicon oxide gas furnace hoods collected through condensation, the dry dust collection devices by collecting fine silica powder, the product is referred to in this standard. " silica dioxide recovery furnace ", referred to as" silica dioxide " (commonly known as" silica fume ").