People's Republic of China National Standard - Vanadium Residue

national standards of People's Republic of China

Vanadium slag

GB5062-85

This standard applies to vanadium slag extracted from vanadium pig iron.

1 Technical requirements

1.1 Grades and Chemical Composition

1.1.1 Vanadium slag is divided into six grades according to vanadium pentoxide grade, and its chemical composition shall comply with the following table:

Grade

Vanadium slag 11

Vanadium slag 13

Vanadium slag 15

Vanadium slag 17

Vanadium slag 19

Vanadium slag 21

Code number

FZ11

FZ13

FZ15

FZ17

FZ19

FZ21

Change

learn

to make

Minute

V2O5

10.0-12.0

>12.0-14.0

>14.0-16.0

>16.0-18.0

>18.0-20.0

>20.0

P

A group

Do not

more than the

0.08

Group II

0.35

Three groups

0.70

CaO

A group

1.0

Group II

1.5

Three groups

2.5

SiO2

A group

22.0

Group II

24.0

Three groups

34.0

Four groups

40.0

1.1.2 The content of metallic iron in massive vanadium slag should not exceed 22%.

1.2 Physical State

The vanadium slag is delivered in a bulk or powder form. The particle size of the massive vanadium slag must not exceed 200 mm x 200 mm. The particle size of the powdered vanadium slag and the metal iron content are agreed upon by the supply and demand sides.

1.3 Delivery Requirements

Delivery of vanadium slag must not be mixed with significant impurities.

2 test methods

2.1 Sampling

The sample of bulk vanadium slag was taken in accordance with the method specified in Appendix A (Supplement).

2.2 sample preparation

The preparation of bulky vanadium slag samples was carried out according to the method specified in Appendix 3 (Supplement).

2.3 Determination of iron content

The determination of the iron content of bulk vanadium slag is temporarily carried out according to the current test methods of each plant.

2.4 Chemical Analysis

The chemical analysis method was performed according to YB547-67 "Methods for Chemical Analysis of Vanadium Slag".

2.5 Others

The test method for powdered vanadium slag, except for chemical analysis, was agreed by both parties.

3 inspection rules

3.1 The delivery of vanadium slag is accepted by the vehicle and the vanadium slag in each compartment is a delivery batch.

3.2 The inspection and acceptance of vanadium slag quality shall be carried out by the technical supervision department of the supplier. The acquirer has the right to conduct re-inspection. If there is objection, it should be submitted to the supplier within one month from the date of arrival.

4 Packaging, Transport and Quality Certificates

4.1 Bulk vanadium slag is transported in bulk or in open-air vehicles. If required by the buyer, it can be shipped by boxcar or simple boxcar.

4.2 The powdered vanadium slag is packaged and transported by both the supplier and the buyer.

4.3 The delivery of vanadium slag shall be attached with retest specimens and quality certificates.

The quality certificate should indicate:

a. Vanadium slag brand, group, grade, category, chemical composition and metal iron content;

b. Weight and base amount.

c. vehicle number and delivery date;

d. supplier name and inspector code.

Appendix A

Bulk vanadium slag sampling method

(Supplement)

A.1 The test specimens shall be taken with a spade in the delivery compartment.

A.2 The sample shall be taken in two layers. The heights of the upper and lower layers shall be respectively located at 3/4 and 1/4 of the actual loading height of the vanadium slag. The location of each sampling point should meet the following requirements:

“○” and “×” indicate the locations of the upper and lower sampling points, respectively

A.3 The sampling amount at each sampling point should be balanced and not less than 10kg. The total sampling volume of each batch of vanadium slag should not be less than 1% of the actual weight of the batch of vanadium slag.

A.4 The particle size distribution of vanadium slag samples should be representative of the actual particle size distribution of the vanadium slag.

A.5 After agreement between supply and demand sides, it is allowed to quantitatively store vanadium slag and sample it before loading. After loading, the components that make up the batch of vanadium slag are combined into the batch of samples.

Appendix B

Bulk vanadium slag sample preparation method

(Supplement)

B.1 Test vanadium slag samples shall be prepared by crushing and shrinking all samples of the same delivery lot.

B.2 The sample is broken on a dedicated high-manganese steel plate with a crusher or manually.

B.3 Flatten the sample on the steel plate and divide it by the quater method (take the diagonal) as specified in the following table:

The maximum size before crushing, mm

The maximum size after crushing, mm

Layer thickness, mm

Reduced number of divisions

200

100

150

1

50

100

2

20

50

3

100

50

100

1

20

50

2

10

20

4

50

20

50

1

10

20

3

5

20

4

20

10

20

2

50

20

3

3

Shrink to 2.5kg

10

5

20

1

3

Shrink to 2.5kg

5

3

Shrink to 2.5kg

B.4 Divide the sample below 3mm into four equal parts by quartering method, one for the test sample, one for the auxiliary sample, keep for three months, the buyer, and the other discard.

B.5 The chemical analysis sample was taken by magnetic separation and suction of metallic iron I and metallic iron II and passed through a sieve of 120 mesh.

Additional information:

This standard was proposed by the Ministry of Metallurgical Industry of the People's

This standard was drafted by Chengde Steel Works.

The main drafters of this standard are Zhou Yinjun and Jin Xincui.

This standard was entrusted to the Ministry of Metallurgical Industry Information Standard Research Institute responsible for the interpretation.

From the date of implementation of this standard, the former Ministry of Metallurgical Industry Standard YB320-75 "vanadium slag" is invalid.