GB/T 24265-2014 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 24265-2014 | English | 85 |
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Diatomite filter aid for industrial
| Valid |
| GB 24265-2009 | English | 479 |
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Diatomite filter aids
| Obsolete |
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GB/T 24265-2014: Diatomite filter aid for industrial---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT24265-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 73.080
Q 69
Replacing GB 24265-2009
Diatomite filter aid for industrial
Issued on. JUNE 24, 2014
Implemented on. FEBRUARY 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Classification and marking... 6
5 Requirements... 6
6 Test methods... 7
7 Inspection rules... 11
8 Marks... 12
9 Package, transport and storage... 12
Appendix A... 13
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB 24265-2009 “Diatomite filter aids”.
Compared with GB 24265-2009, the main technical changes are as follows.
- Modified the property of standard from “mandatory” to “recommendatory”,
the name from “Diatomite filter aids” to “Diatomite filter aid for industrial”;
- Modified “baked diatomite” to “calcined diatomite”; representation symbol
was modified from “BS” to “DS” as well (refer to 3.2, 3.3 of this Edition; 3.2
and 3.3 of 2009 Edition);
- Models were merged and modified from 15 to 3 (refer to 4.1.2 of this Edition;
4.1.2 of 2009 Edition);
- Modified marking mode (refer to 4.2 of this Edition; 4.2 of 2009 Edition);
- Deleted quality requirements for diatomite filter for food and medicine as
well as corresponding test methods (refer to 5.1 of 2009 Edition);
- Deleted provisions on appearance color; made appropriate modification on
requirements for microstructure (refer to Table 2 and Table 3 of 2009
Edition);
- Modified requirements for moisture indicator from “≤0.5%” to “≤3.0%” (refer
to Table 2 and Table 3 of 2009 Edition);
- Modified requirements for water soluble indicator from “≤0.5%” to “≤0.8%”
(refer to Table 2 and Table 3 of 2009 Edition);
- Modified requirements for silicon oxide from “≥85%, ≥82%, ≥80%” to “≥85%,
≥80%, ≥75%” respectively (refer to Table 2 and Table 3 of 2009 Edition);
- Deleted indicator requirements for ferric oxide, aluminum oxide, calcium
oxide, and magnesium oxide; it was modified as “Other chemical
components shall be determined by the seller and the buyer after
negotiation” (refer to Table 2 and Table 3 of 2009 Edition);
- Made appropriate modification on inspection method for microstructure
(refer to 6.1 of this Edition; 6.1 of 2009 Edition);
- Refined requirements for permeability measuring device (refer to 6.2.1 of
this Edition; 6.2.1 of 2009 Edition);
- Modified determination method of water soluble from “referring to standards”
to “being specifically given” (refer to 6.4 of this Edition; 6.4 of 2009 Edition);
- Modified determination method of pH value from referring to “GB 14936” to
“JC/T 414” (refer to 6.5 of this Edition; 6.5 of 2009 Edition);
- Modified determination method of tap density from referring to “GB/T 21354”
to “JC/T 414” (refer to 6.6 of this Edition; 6.6 of 2009 Edition);
- Deleted determination methods of hydrochloric acid soluble, loss on ignition,
hydrofluoric acid residue, ferric oxide, aluminum oxide, calcium oxide,
magnesium oxide, soluble iron, lead and arsenic (6.6, 6.7, 6.8, 6.11, 6.12,
6.13, 6.14, 6.15 and 6.16 of 2009 Edition);
- Modified batch number from “30t” to “500t” (refer to 7.2 of this Edition; 7.2
of 2009 Edition);
- Added provisions. “Storage period is 36 months” (refer to 9.2.3).
This Standard was proposed by China Building Materials Federation.
This Standard shall be under the jurisdiction of National Technical Committee
on Nonmetallic Mineral Products of Standardization Administration of China
(SAC/TC 406).
The drafting organizations of this Standard. Qingdao Chuanyi Diatomite Co.,
Ltd, Qingdao Three-Star Diatomite Co., Ltd., Xianyang Non-metallic Mineral
Research Institute Limited, National Non-metallic Mineral Product Quality
Supervision and Inspection Center, and Baishan Institute of Product Quality
Inspection.
Main drafters of this Standard. Shang Xingchun, Dong Bozhen, Li Chunchang,
Tang Chongming, Shi Xiaoying and Zhang Xiaoman.
This Standard replaces the following previous standard.
- GB 24265-2009.
Diatomite filter aid for industrial
1 Scope
This Standard specifies terms and definitions, classification and marking,
requirements, test methods, inspection rules, marks, package, transport and
storage of diatomite filter aid for industrial.
This Standard is applicable to diatomite filter aid for industrial of which the main
raw material is diatomite and is made by calcination or flux calcination.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
JC/T 414 Diatomite
3 Terms and definitions
The following terms and definitions apply to this Standard.
3.1 Permeability
The volume of filtrate per filter cake thickness of per filter area at per unit time
when filtrate viscosity is 1 cP and filtration layer pressure is 101325 Pa.
3.2 Calcined diatomite
The product that is made of diatomite by calcination at 650°C ~ 1000°C,
grinding and classification.
4 Classification and marking
4.1 Classification
4.1.1 Diatomite filter aid for industrial is classified into calcined diatomite filter
aid (represented by DS) and flux calcined diatomite filter aid (represented by
ZDS), according to processing method.
4.2 Marking
The marking of diatomite filter aid for industrial is written according to product
name, standard number, calcination mode, model, and grade order.
5 Requirements
Physical and chemical indicators of diatomite filter aid for industrial shall comply
with the provisions in Table 2.
6 Test methods
6.1 Inspection of microstructure
6.2 Determination of permeability
6.2.1 Apparatus
Requirements are as follows.
6.2.2 Test procedures
6.3 Determination of moisture
Conduct according to JC/T 414.
6.4 Determination of water soluble
6.5 Determination of pH value
Conduct according to JC/T 414.
6.6 Determination of tap density
Conduct according to JC/T 414.
6.7 Determination of silicon oxide
Conduct according to JC/T 414.
7 Inspection rules
7.1 Inspection classification
7.1.1 Factory inspection
Factory inspection items are permeability, moisture and tap density.
7.2 Batching principle
Every 500 t of diatomite filter aid for industrial of same category, same grade
and in continuous production shall be one batch. If it were less than 500 t, it
shall be regarded as one batch.
7.3 Sampling method
Regard bag as sampling unit. Use equidistant sampling. take one bag from
every n-1 bag (n=N/20; N is the total number of bags of this batch of products,
n takes integer).
7.4 Sample storage
After completely mixing, the collected sample shall be divided into two portions
by coning and quartering. Respectively place them into clean and dry wild-
mouth jars.
7.5 Determination rules
When all quality indicators of product comply with requirements in Clause 5,
this batch of products shall be determined as qualified. If one or more than one
quality indicator failed for the requirements in Clause 5, it shall re-conduct
sampling and inspection for the unqualified item. When results of re-inspection
all meet requirements in Clause 5, this batch of products shall be determined
as qualified; otherwise it shall be unqualified.
8 Marks
8.1 Product identification, net mass, manufacturer’s name and address, marks
of rainproof, moisture proof and sun block shall be indicated on outer package
of diatomite filter aid for industrial.
9 Package, transport and storage
9.1 Package
Diatomite filter aid for industrial shall be packaged in bags. Packaging bag is
attached with backing film, topical bag or kraft paper bag. Exhaust air before
package sealing.
9.2 Transport and storage
9.2.1 During transport, the product shall be protected from rain, snow, sun,
moisture, stress, pollution and man-made damage; throwing and pulling with
an iron hook are not allowed during loading and unloading.
Appendix A
(Informative)
The relationship between water temperature and viscosity coefficient
The relationship between water temperature and viscosity coefficient is shown
in Table A.1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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