Research on low-carbon smelting technology of blast furnace – optimized design of blast furnace

Figures & data

Figure 1. Force model of the deadman and the cooling stave.

Table 1. The force analysis parameters of the deadman.

	2500 m^3	3500 m^3	4500 m^3	5500 m^3		2500 m^3	3500 m^3	4500 m^3	5500 m^3
ρc	990	990	990	990	ϵc	0.35	0.34	0.32	0.31
ϵd	0.48	0.46	0.42	0.40	ϵe	0.49	0.48	0.47	0.46
hd	2.8	3.1	3.3	3.5	θ2	34	32	30	29
rh	4.2	4.9	5.2	5.9	hsu	2.0	2.2	2.4	2.8
htt	4	4.4	4.8	5.4	pbl	394,000	410,000	418,000	439,000
hts	1.5	1.5	1.5	1.5	ptop	224,000	240,000	248,000	254,000
θ1	57	58	60	61	Ζ	1.1	1.1	1.1	1.1
ϵl	0.48	0.46	0.42	0.40	ρg	1.363	1.363	1.363	1.363
mo	1690	1690	1690	1690	vt	240	245	260	265
mc	350	340	330	320	ρs	2700	2700	2700	2700
ρo	3520	3520	3520	3520	hs	0.69	0.75	0.76	0.84
N	28	32	38	42	ρi	7000	7000	7000	7000
dr	1.68	1.86	2.05	2.27	hf	0.10	0.10	0.10	0.10
dt	8.4	9.8	10.4	11.8	U	0.015	0.015	0.015	0.015
ht	1.3	1.6	1.8	2.0	D	0.28	0.30	0.31	0.32

Figure 2. Schematic diagram of equivalent bosh angle.

Table 2. The force analysis parameters of the cooling stave.

Parameter	Value
Angle of internal friction φ (°)	30
Bosh angle α (°)	75.27
Weight density of burden γ (N m^−3)	25
Friction factor of burden and cooling stave μ	0.35
Belly height hbe (m)	2.10
Bosh height hbo (m)	4.50
Belly diameter dbe (m)	14.2

Figure 3. Diagram of calculation and actual comparison of the salamander in China.

Figure 4. The designed salamander depth in the world.

Figure 5. Influence the salamander depth and the voidage of deadman.

Figure 6. Influence of the stress with the descend position of the burden.

Figure 7. Influence of bosh angle and stress distribution of the blast furnace.

Figure 8. Schematic diagram of the gas flow scouring curve.

Figure 9. The designed bosh angle in the world.