Hot Metal Desulfurization & Increasing Silicon

Description

Hot Metal Desulfurization & Increasing Silicon

Handan Metallurgical Engineering and Research Co. Ltd. has rich design and construction skills and experience on hot metal desulfurization and increasing silicon, to provide complete solutions and design, general contracting, equipment supply and other services to meet the customers’ individual requirements.We have Chinese best Pellet Machinery.

To meet the demand of the highly standard of steel (casting iron), and reduce the cost of production, Handan Metallurgical Engineering and Research Co., Ltd. works for the technology development and equipment manufacturing of the desulfurization, making the further research on the hot metal injection method desulfurization process.
There are two kinds of the process: single injection and complex injection, our product has the advantage of high desulfurization efficiency, low cost, simply operation. The characteristics are as bellows:
1) High desulfurization efficiency, reduce the w(s) to 0.006% below, even can reach 0.002%.
2) High desulfurization capability, it can suit to the sulfur in the hot metal, even the primary sulfur content is 0.01~0.1%, and we can meet the good result.
3) Lowest Mg consumption, reducing from 0.025~0.06% to 0.01% below, Mg kg/ Fe ton is 0.3~0.6 kg, low desulfurization cost.
4) The injection accuracy has the special control technology, which can guarantee the injection accuracy tolerance ≤0.5%. If beyond this value, it will increase the consumption, also affect the desulfurization efficiency, and even cause the accident such as splashing or lancer jam. The magnesium injection is 1~20kg/min, adjustable.

This line consists of ladle flipper, slag removal machine, transfer trolley, injection system, nitrogen preparation system, dedust system, fuel preparation system, ignition system, power distribution system, automation system, water supply and drainage system, also building. We can realize the automatic operation on the hot metal from 30t to 200t.

Actual Data of Desulfurization

序号 No.	贴水重量 Hot metal weight	喷吹时间 (min) Injection time	喷镁量(Kg) Mg injection	硫含量(%)		脱硫率(%) Desulfur. rate	吨耗镁量 Mg kg /ton
序号 No.	贴水重量 Hot metal weight	喷吹时间 (min) Injection time	喷镁量(Kg) Mg injection	脱硫前 Before	脱硫后 After	脱硫率(%) Desulfur. rate	吨耗镁量 Mg kg /ton
1	62.8	8	31.14	0.03	0.002	93.3	0.5
2	77.36	9	37.19	0.035	0.008	77.1	0.48
3	75	9	38.99	0.046	0.007	84.8	0.52
4	71.46	8	36.51	0.043	0.009	79.1
5	64.54	6	24.92	0.03	0.007	76	0.39
6	79.96	6	20.32	0.027	0.01	63	0.25
7	82.9	6	24.92	0.03	0.004	86.7	0.3
8	90.76	7	44.39	0.03	0.006	80	0.49
9	110	18	60	0.025	0.003	88	0.54
10	115	24	112	0.053	0.004	92	0.97
11	140	18	72	0.02	0.002	90	0.51

Increasing Silicon to Hot Metal

By adding the ferrosilicon into the hot metal through the silicon increasing device, the silicon content can increase to the desired value. It mainly used for conversion of low silicon hot metal into casting iron, which is a new method to produce casting iron. It can save energy and increase productivity, meanwhile improve the quality of the casting. By working with desulfurization and mixing system, it can make the hot metal cost equally and stably.
Technical Specification:

high ferrosilicon absorbing rate, more than 80%.
blast furnace low silicon operation (si≈0.4%), stable and easy operation.
it can produce various model casting iron, steel-making iron, and do not affect the blast furnace operation.
it can reduce the impurity element in the hot metal, and guarantee the good quality of the hot metal.
the composition of the hot metal is uniform, the silicon in the ductile iron is stable.

Hot Metal Desulfurization & Increasing Silicon