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Refractory and high-refractory products for laying the blast heaters of air flue of blast furnace

Refractory and high-refractory products

Refractory and high-refractory products for laying the blast heaters of air flue of blast furnace are used for a laying of blast heaters and hot-blast lines of blast furnaces and other thermal units

Technical characteristics

	Norm for mark
	SHV-28	SHV-37	SHV-42	MKV-72
GOST 20901-2016
Mass fraction, %: Al₂O₃, no less Fe₂O₃, no more	28 -	37 -	42 1,7	over 72 1,2
Compressive resistance, N/mm² ,for products numbers: - packed - walling, domical and for air flue, fittings, tuyere zones	15 15	20 20	40 30	50 30
Open porosity, %, no more than, for products numbers: - packed - walling, domical and for air flue, fittings, tuyere zones	25 27	23 25	in the limit 14-20	21 24
Residual changes in the sizes during heating,%, no more, at the temperature: 1350 °C 1450 °C 1600 °C	-0,5 - -	-0,2 - -	- - 0,4 -	- - -0,8
Onset temperature of softening, °C, no low	1270	1330	1500	1550
Refractory property, °C, no low	1670	1730	1750	-

Norm for mark

SHV-28

SHV-37

SHV-42

MKV-72

GOST 20901-2016

Mass fraction, %:

Al₂O₃, no less

Fe₂O₃, no more

1,7

over 72

1,2

Compressive resistance, N/mm² ,for products numbers:

- packed

- walling, domical and for air flue, fittings, tuyere zones

Open porosity, %, no more than, for products numbers:

- packed

- walling, domical and for air flue, fittings, tuyere zones

in the limit

14-20

Residual changes in the sizes during heating,%, no more, at the temperature:

1350 °C

1450 °C

1600 °C

-0,5

-0,2

- 0,4

-0,8

Onset temperature of softening, °C, no low

1270

1330

1500

1550

Refractory property, °C, no low

1670

1730

1750

Limit deviation, mm

Product size, mm	Product number
	1-74, 81-106	75-79
length
up to 230 inclusive	±2	- 2
over 230 to 350 inclusive	±3	-
over 350 to 450 inclusive	±4	-
width	±2	- 2
thickness	±1	±1
Product size
		packed hex product №80
distance between parallel faces		-2
thickness		±2
inner diameter		±2

Form and sizes

Rectangular product (walling and packed)

Product number	Sizes, mm			Complexity unit
	L	H	S
1	230	150	75	2
2	345	150	75	3
3	450	150	75	4
4	230	150	100	4
5	345	150	100	4
6	450	100	100	4

Trapezoidal double sided wedge (walling product)

Product number	Sizes, mm				Complexity unit
	L	S₁	S	H
7	230	135	150	75	3
8	230	120	150	75	3
9	345	125	150	75	4
10	345	110	150	75	4
11	450	115	150	75	4
12	230	135	150	100	4
13	230	125	150	100	4
14	345	120	150	100	4
15	345	110	150	100	4
16	450	115	150	100	4

Wedge product (domical)

Product number	Sizes, mm							Complexity unit
	L	H	H₁	S	S₁	S₂	S₃
17	450	150	117	84	84	65	65	3
18	450	150	117	84	74	65	57	3
19	450	150	117	84	64	65	49	4
20	450	150	125	84	84	70	70	4
21	450	150	125	84	79	70	66	4
22	450	150	125	84	74	70	62	4
23	450	150	125	84	69	70	58	4
24	450	150	125	84	64	70	53	4
25	450	150	129	84	84	73	73	4
26	450	150	129	84	79	73	69	6
27	450	150	129	84	74	73	64	6
28	450	150	129	84	69	73	60	6
29	450	150	129	84	64	73	56	6
30	450	150	133	84	84	75	75	6
31	450	150	133	84	80	75	71	6
32	450	150	133	84	74	75	66	6
33	450	150	133	84	70	75	63	6
34	450	150	133	84	64	75	57	6
35	450	150	136	84	84	76	76	6
36	450	150	136	84	80	76	72	6
37	450	150	136	84	74	76	67	6
38	450	150	136	84	70	76	63	6
39	450	150	136	84	64	76	58	6
40	450	150	140	84	84	76	76	6
41	450	150	140	84	84	79	79	6
42	450	150	140	84	74	79	70	6
43	450	150	140	84	64	79	60	6
44	450	150	150	84	84	68	68	6
45	450	150	150	84	74	68	58	6
46	450	150	150	84	84	70	70	6
47	450	150	150	84	74	70	60	6
48	450	150

Product number	Sizes, mm			Complexity unit
	L	H	S
1	230	150	75	2
2	345	150	75	3
3	450	150	75	4
4	230	150	100	4
5	345	150	100	4
6	450	100	100	4

Product number	Sizes, mm			Complexity unit
	L	H	S
1	230	150	75	2
2	345	150	75	3
3	450	150	75	4
4	230	150	100	4
5	345	150	100	4
6	450	100	100	4

Product number	Sizes, mm			Complexity unit
	L	H	S
1	230	150	75	2
2	345	150	75	3
3	450	150	75	4
4	230	150	100	4
5	345	150	100	4
6	450	100	100	4