This standard specifies the requirements, test methods, inspection rules, packaging and transportation of tin concentrate. This standard applies to sulfide and oxidized tin concentrates. YS/T 339-2002 Tin Concentrate YS/T339-2002 Standard download decompression password: www.bzxz.net

People's Republic of China nonferrous metal industry standard YS/T 339..--2002
Generation YS/355:934
2002-11-22 Issued
Tin concentrate
2003-01-01 Implementation
State Economic and Trade Commission
YS/T339--2002
This standard is a revision of YS/T355-934. This standard is compiled in accordance with GB1.1200C Standardization Work Guidelines Part 1: Standard Transfer Structure and Gradual Writing Rules and GB1.32997 Product Standardization Requirements . Standard Ma / 33S-99 / box can be compared with the lower technical conditions: ", such as Guang "Miaotai ", "Fan Shang", "Cai Fan Xing Yin Shi Jiao Chan", "Inspection Ship Code", "Printing" order form, etc. Links: 2. The grade of tin concentrate, the original eight grades are changed to the standard seven grades. The main grade is increased from 0-65% in the original rice to %-7% in the standard,
3. The requirements for impurities are added in the total chemical content, and other qualities are also slightly "The corresponding words are strictly regulated. From 1:00 onwards, this standard replaces YS/3-9 and is provided by the National Standardization Technical Committee of the National Nonferrous Metals Association. This standard is under the jurisdiction of the National Nonferrous Metals Association Standardization Technical Committee, and is drafted by Liuzhou Jicai Co., Ltd. This standard is initiated by Yunnan Tin Company. The number of drafters of this standard is Chao Diagnosis, except Zhiwen, Daxin Qian, Ni Paifeng, Lanqingqi, Gongxi, Xie Xiaoqiu, Bangcai Jiaxian Huaiyin. The standard is called standard The National Nonferrous Metals Standardization Technical Committee is responsible for the selection. The current version of this standard is: YR73F7U:bzxZ.net
73 No. 2
-Y8/13391994.
1 Scope
This standard defines the requirements for refinement, testing, inspection and packaging, transportation: This standard is applicable to chemical and oxidized tin concentrates. 2 Normative references
YS/T 339-2002
The following documents are the clauses of this standard through their reference date. All references with a production date are subject to the following amendments, including any missing content or revisions! They do not constitute this standard. However, for the purpose of this standard, the parties agree to include the latest version of the document. Only the date of reference is noted, and the latest version applies to this standard. GH/1250 Method for expressing limit values ​​GB/T131--[833 Method for chemical analysis of concentrates GB/T17 Specification for chromatographic analysis (1/T1426(Micro-nonferrous gold flotation concentrate sampling and sample preparation general rules 3 Requirements 3.1 Product classification The concentrate can be divided into two categories according to its properties. One is the chemical type that needs to be resistant to furnace smelting, and the other is the mineralization type concentrate that needs to be processed before being processed. The chemical composition of the concentrate is divided into grade I, grade II, grade IV, grade III, grade VI and grade VII. 3.2 Chemical composition The chemical composition of the concentrate shall comply with the requirements of the table: 3.2.1 If the purchaser has special requirements for the silver concentrate, the production and demand parties may negotiate for effectiveness. 3.2.2 Chemical composition shall be in accordance with the standard number/T171 or the standard 3.3 Water content shall not be greater than % 3.4 Particle size The concentrate powder size is not less than C.371m1m F3:15%. Note: For the boiler produced by the selected plant, the powder size less than U.4 may not be less than 1:3.5 Others The concentrate shall not be mixed with external water. Approved with expansion requirements mixed 1
YS/T 339-2002
-waste
three unified printing
three level points
four level points
five Jun products
E level
three line products
Bai Hai products
people lead products
H: products
A test method
no less than ten
Table 1 Chemical composition of green concentrate
Chemical share
Quality is not concerned with
4. ]Required potential mineral chemistry: Determination of content and moisture according to (1/11819-33 4.2 The viscosity of the product shall be screened at 0.GY1mm on a regular basis. 5.1 Inspection and acceptance. The product shall be inspected and accepted by the technical supervision department of the purchaser at the designated location of the product. The inspection shall ensure that the product quality complies with the provisions of this standard (or the provisions of the company). 5.2 Batch inspection. The inspection ratio of each batch of the same product shall not be greater than that of the same product. The inspection ratio shall be agreed upon by the supply and demand parties. 5.3 Inspection items. Each batch of products shall be inspected for chemical composition, moisture content and integrity. The quality inspection of the batch of products shall comply with the thermal conductivity inspection in Table 2. Table 2 Inspection items for concentrate. |Technical items
Chemical total score
5.4 Sampling and sample preparation
Sampling and sample preparation
5.4.1 Sampling of plastic concentrate
Required article number
Test force number
Standard specification will
Batch by batch
Cracked pot with no small amount of sample bag sampling column: use a specific needle to take a sample, stop the sample fiber finger into the package, print the needle: and pick up and mix the specific sample in the package: 5.1.2 Sampling of bulk sawn concentrate
YS/T 3392D02
First, mix the batch of fines evenly: then push it into a shape with a height of C, and then use a sampling machine to select samples according to the sampling point range of 23cm. The sampling needle should be straight at the bottom of the barrel, and rotate once, and collect the first and subsequent fire samples. Mix the samples taken evenly.
5.4.3 Sample preparation
The sample preparation shall be carried out in accordance with the provisions of (1/T14260). The sample taken shall be made into three parts: one is the acceptance analysis sample; one is for delivery; and the other is kept for three months by the required storage and used as the intermediate sample. 5.5 Determination of test results
5.5.1 The determination of test results shall be carried out in accordance with the provisions of the comparison method of revised values ​​in (T/T1251). 5.5.2 When the test results of chemical composition, moisture content and density are inconsistent with the wood standard, the inconsistency will be transferred to the criticism. 5.5.3 When the parties to the purchase and sale have disputes over the test results, the parties to the purchase and sale shall work together to resolve them: the final judgment shall be based on the final result.
6 Packaging and transportation
6.1 The weight of the transport film is reduced. The packaging is made of woven or hemp, and the net weight of 4 bags is (30 ± 2) g. 6.2 The ore can be shipped by batch. When shipped, it shall be shipped in batches. It can be shipped by other methods. 6.3 During the shipment, there shall be no leakage or leakage. 6.4 Quality Advance Note
Each batch of goods shall be accompanied by the original factory quality report, which shall indicate a! b) Name of supplier, address, telephone, fax
b) Name of concentrate:
Category and grade
) Code of this standard:
g) Delivery date,
Order form (contract? Content
This contract contains the following contents: 7.1 Product name;
7.2 Type and grade:
7.3 Special requirements for dye content;
7.4 Quantity;
7.E Code of this standard:
6) The purchaser and the demander shall provide the basis for the inspection provided by the quality supervision departments of the purchaser, or the supply and demand parties shall negotiate: 7.7 Others:
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