YS/T 298-2015 English PDF (YST298-2015)

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YS/T 298-2015: High titanium slag
YS/T 298-2015
YS
NON-FERROUS METAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.150
H 64
Replacing YS/T 298-2007
High Titanium Slag
高钛渣
ISSUED ON. APRIL 30, 2015
IMPLEMENTED ON. OCTOBER 01, 2015
Issued by. Ministry of Industry and Information Technology
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Requirements ... 5
5 Test Methods ... 6
6 Inspection Rules ... 7
7 Marking, Package, Transportation, Storage and Quality Certificate ... 8
8 Contents of Ordering List (or Contract) ... 9
High Titanium Slag
1 Scope
This Standard specifies the requirements, test methods, inspection rules, marking,
package, transportation, storage, quality certificate, ordering list (or contract) contents
of the high titanium slag.
This Standard is applicable to the high titanium slag used by titanium tetrachloride,
artificial rutile and titanium pigment with titanic iron ore as raw materials, and producing
by electric furnace smelting.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 8170 Rules of Rounding off for Numerical Values and Expression and
Judgement of Limiting Values
YS/T 514.1 Methods for Chemical Analysis of High-Titanium Slag and Rutile - Part
1. Determination of Titanium Dioxide Content - Ferric Ammonium Sulfate Titration
YS/T 514.2 Methods for Chemical Analysis of High Titanium Slag and Rutile - Part
2. Determination of Total Iron Content - Potassium Dichromate Titration
YS/T 514.4 Methods for Chemical Analysis of High Titanium Slag and Rutile - Part
4. Determination of Silicon Dioxide Content - Gravimetric Analysis and
Molybdenum Blue Spectrophotometry
YS/T 514.5 Methods for Chemical Analysis of High Titanium Slag and Rutile - Part
5. Determination of Aluminum Oxide Content - EDTA Titration
YS/T 514.9 Methods for Chemical Analysis of High Titanium Slag and Rutile – Part
9. Determination of Calcium Oxide, Magnesium Oxide, Manganese Monoxide,
Phosphorus, Chromic Oxide and Vanadium Pentoxide Content – Inductively
Coupled Plasma Atomic Emission Spectrometry
The inspection of the product particle size shall be carried out by sieving. Overlap
the standard sieve; overlap from top to bottom in order from the large sieve holes
to the small ones. Place the standard sieve onto the sieve shaker; take no less
than 100g of sample to place it on the uppermost standard sieve; start the sieve
shaker; shake and screen for 5min then stop. Remove the standard sieve, weight
the sample on each layer of sieve, and under the 74µm sieve; record the data;
calculate the percentage of it accounting for the sample weight.
5.4 Appearance quality
The appearance quality inspection of the product shall be carried out by visual
examination.
6 Inspection Rules
6.1 Inspection and acceptance
6.1.1 The product shall be inspected by the supplier; ensure that the product
quality conforms to the provisions of this Standard and ordering list (or contract);
and fill in the quality certificate.
6.1.2 The purchaser shall inspect the received products according to the
provisions of this Standard; when the inspection result is inconsistent with the
provisions of this Standard or ordering list (or contract), it shall be proposed to the
supplier within 3d from the date of receipt of the product; it shall be solved through
the consultation between the supplier and the purchaser. If the arbitration is
required, it shall be carried out by entrusting the organization that is jointly
approved by the two parties, and shall be jointly sampled by the purchaser.
6.2 Batching
The product shall be delivered in batches; each batch consists of the products
with the same designation, the same particle size. The product mass per batch
shall be no greater than 110t.
6.3 Sampling
The number of bags is randomly selected from each batch of products. for the
large package (1000kg/bag), select 1 bag from 5 bags as the sample, each
sample volume shall be no less than 100g; then combine into large sample. For
the small package (25kg or 30kg/bag), select 1 bag from 20 bags as the sample,
each sample volume shall be no less than 30g; then combine into large sample.
The sampling shall adopt intubation method; taking into consideration of the upper,
middle, and lower layers; observe the appearance quality one by one.
7.2 Package, transportation and storage
7.2.1 The product shall be packaged in double-layered bags; the inner layer shall
use plastic bag, while the external layer shall use sacks or woven bags.
7.2.2 The product is divided into large and small packages. The new weight per
bag of large package is 1000kg; while the net weight per bag of small package is
25kg or 30kg. The bag mouth shall be tightly sealed; it shall not be exposed to the
rain or moisture during the transportation and storage processes. When the
purchaser has special requirements for the package, it shall be negotiated
between the supplier and the purchaser; and indicated in the ordering list (or
contract).
7.3 Quality certificate
Each batch of products shall be attached with quality certificate, which shall be
indicated as follows.
a) Supplier name, address, telephone and fax;
b) Product name;
c) Batch number, designation, net weight, and quantity;
d) This Standard number;
e) Results of each analysis inspection; and mark from the Quality Supervision
Department of the supplier;
f) Exit-factory date.
8 Contents of Ordering List (or Contract)
The ordering list that orders the products listed in this Standard shall include the
following contents.
a) Product name;
b) Particle size;
c) Total weight and Unit weight;
e) Special requirements negotiated by the supplier and the purchaser;
f) This Standard number;