This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of common aluminum hydroxide (Al(OH)3). This standard is applicable to the production of inorganic aluminum salts, flame retardant fillers and raw aluminum hydroxide for the production of other aluminum hydroxide and alumina products. GB/T 4294-1997 Aluminum Hydroxide GB/T4294-1997 Standard download decompression password: www.bzxz.net

GB/T4294-1997
This standard is prepared in accordance with the relevant provisions of GB/T1.1-1993 and GB/T1.22-1993 "Guidelines for Standardization Work". This standard refers to advanced foreign standards, combines my country's national conditions, and based on the principle of technological advancement and economic rationality, the technical conditions in the original standard have been revised as follows:
1. The original national standard grade 1 of aluminum oxide: SiO, content not more than 0.03%, revised to not more than 0.02%; Fe2O content not more than 0.03%, revised to not more than 0.02%, Na2O content not more than 0.45%, revised to not more than 0.4%. 2. The original national standard grade 2 of aluminum hydroxide: SiO, content not more than 0.05%, revised to not more than 0.04%; Na?0 content not more than 0.45%, revised to not more than 0.5%.
3. The original national standard of aluminum hydroxide grade 3 products: SiO2 content is not more than 0.10%, revised to not more than 0.08%; Na20 content is not more than 0.50%, revised to not more than 0.6%.
From the date of entry into force of this standard, it will replace GB/T4294-84. This standard is proposed by China Nonferrous Metals Industry Corporation. This standard is under the jurisdiction of the Standard Metrology Institute of China Nonferrous Metals Industry Corporation. This standard is drafted by Shandong Aluminum Company. The main drafters of this standard are: Li Linhai, Liu Shuang, Zhong Yimei. 269
1 Scope
National Standard of the People's Republic of China
Aluminium hydroxide
GB/T 4294—1997
Replaces GB429484
This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of common aluminium hydroxide (AI(OH) :).
This standard is applicable to the production of inorganic aluminium salts, flame retardant fillers and raw aluminium hydroxide for the production of other aluminium hydroxide and alumina products. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB8170-87 Rules for rounding off numbers
GB/T6610.1-86 Chemical analysis method for aluminum hydroxide Gravimetric determination of moisture
GB/T6610.2—86 Chemical analysis method for aluminum hydroxide Gravimetric determination of ignition lossGB/T6610.3—86 Chemical analysis method for aluminum hydroxide Molybdenum blue photometric determination of silicon dioxide contentGB/T 6610. 4—86
GB/T 6610. 5—86
3 Contents of order contract
Chemical analysis method for aluminum hydroxide
O-phenanthroline photometric determination of iron oxide content Chemical analysis method for aluminum hydroxide
Flame photometric determination of sodium oxide content
The order contract for the products listed in this standard shall include the following contents: 3.1 Product name.
3.2 Brand.
3.3 Weight.
3.4 ​​Standard number.
3.5 Others.
4 Requirements
4.1 Product classification
Aluminum oxychloride is divided into three grades according to chemical composition: AH-1, AH-2, AH-3. 4.2 Chemical composition
The chemical composition of aluminum hydroxide shall comply with the provisions of Table 1. Approved by the State Administration of Technical Supervision on December 22, 1997 270
Implementation on August 1, 1998
Not less than
GB/T4294—1997
Table 1 Chemical composition of aluminum hydroxide
Chemical composition, %
Not more than
Al, 0); the content is 100% minus the difference between the actual content of the impurities listed in Table 1 and the loss on ignition. 2 The chemical composition in the table is calculated on a dry basis after drying at 110℃±5℃ for 2h. 3 The impurity components in the table shall be processed in accordance with the digital rounding rules of GB8170. 4.3 Appearance
Aluminum hydroxide is self-colored powder or sand-like crystals and should not contain impurities. 4.4 Adhesion water
The adhesion water of aluminum hydroxide should be less than 14%.
4.5 Other requirements
The buyer has special requirements for quality, which shall be negotiated by the supply and demand parties. 5 Test method
The impurity content is not more than
The arbitration analysis method of the chemical composition and adhesion water of lead hydroxide shall be carried out in accordance with the provisions of GB6610. 6 Inspection rules
6.1 Inspection and acceptance
6.1.1 Aluminum hydroxide shall be inspected by the supplier's technical supervision department to ensure that the product quality meets the provisions of this standard and fill in the product quality certificate. Its content shall be filled in according to the provisions of Chapter 7 of this standard. 6.1.2 The buyer shall inspect the received products in accordance with the provisions of this standard. If the test results are inconsistent with the provisions of this standard, they should be reported to the supplier within one month from the date of receipt of the product, and the supply and demand parties shall negotiate to resolve the issue. If arbitration is required, arbitration sampling shall be carried out jointly by the demand party. Arbitration sampling and sample preparation methods shall be carried out in accordance with the provisions of 6.4 of this standard. 6.2 Batches
Lead hydroxide shall be submitted for inspection in batches, and each batch shall consist of products with the same batch number, with a general weight of 60t and a maximum weight of no more than 120t. 6.3 Inspection itemswwW.bzxz.Net
Each batch of aluminum hydroxide shall be inspected for chemical composition, adhering water and appearance. 6.4 Arbitration sampling and sample preparation for chemical composition
For arbitration sampling, randomly select different parts of more than 20 bags per batch, insert a copper tube probe with a diameter of 15mm to 20mm along the diagonal of the packaging bag to a depth of not less than 2/3 of the bag length, and take the same number of samples. Mix all the samples thoroughly, reduce them to a weight of not less than 1kg by the quartering method, divide them into three parts, and pack them in three clean ground-mouth glass bottles. One part is for arbitration analysis, and the rest are kept by the supplier and the buyer.
6.5 Determination rules
When the arbitration analysis results of chemical composition do not conform to the provisions of this standard, the brand shall be re-determined according to the arbitration analysis results. 7 Marking, packaging, transportation, storage
7.1 Marking
The packaging bag should indicate:
a) product name;
b) registered trademark;
c) product batch number;
d) weight;
e) supplier name and place of origin.
7.2 Packaging, transportation, storage
GB/T 4294—1997
Polypropylene plastic woven bags are used for packaging bags. When the purchaser has special requirements for product packaging, the supply and demand parties can negotiate and determine. 7.2.1
7.2.2 Transportation and storage
When the product is shipped, the compartment should be cleaned or covered with leather mats. Products of different grades shall not be mixed. Products shall be stacked in batches in a clean and dry warehouse and shall not be contaminated. 7.3 Quality certificate
Each batch of products shall be accompanied by a quality certificate, which shall indicate: a) the name of the supplier;
b) the name and brand of the product;
c) the batch number and weight,
d) the analysis and inspection results and the stamp of the technical supervision department,
e) the number of this standard;
f) the date of manufacture.
Aluminum hydroxide is settled on a dry basis.
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