Mansheng Chu’s scientific contributions

What is this page?

This page lists works of an author who doesn't have a ResearchGate profile or hasn't added the works to their profile yet. It is automatically generated from public (personal) data to further our legitimate goal of comprehensive and accurate scientific recordkeeping. If you are this author and want this page removed, please let us know.

Publications (2)

Figure 1. Schematic diagram of vertical tube furnace used in this study.
Table 1 . Designed chemical compositions of slags and experimental conditions.
Figure 3 displays statistically the TiO 2 additions in the blast furnace during 2013-2016, and the amount of TiO 2 additions are changing from time to time. From the figure, it can be seen that the minimum TiO 2 addition is at the beginning of 2013, and the TiO 2 addition is around 3 kg/ton. The maximum TiO 2 additions happened in Quarter 3, 2014 and end of 2015 that 18 kg/ton TiO 2 was added to strengthen the protection. The Ti contents in hot metal were also reported along with the TiO 2 additions in Figure 3(a). Generally, the Ti content increases when the TiO 2 addition increases regardlessof the changes in operating temperature and slag compositions. The average Ti concentration in hot metal was less than 0.1 wt-%. The feedback from the blast furnace operator has demonstrated that the additions of TiO 2 did improve the hearth lining stability. In the blast furnace operation, the corrosion of hearth is monitored by multiple thermocouples placed inside the linings close to the hot metal bath. The temperature measured by the thermocouple will increase as the severely corroded lining is becoming thinner and the thermocouple is closer to the hot metal. Figure 3(b) shows the temperatures measured by the thermocouples at the hearth area during 2013-2016 in the Jingtang No.1 blast furnace. It can be seen from the figure that after the temperature monitored by the thermocouples increased rapidly, which implies that the lining is corroded and become thinner than normal conditions. The obvious temperature decreases can be further observed after the additions of more Ti-containing resources into the blast furnace. The phenomenon indicates that the charge of Ti-containing resources did help to protect the linings in the blast furnace hearth. However, it can be calculated from the data that the average distribution ratio of Ti in the hot metal to the slag is just more than 13%, which indicates that the functioning Ti content to protect the blast furnace hearth is low and most of the TiO 2 added are wasted with the final slags. The 13% average Ti distribution ratio means the percentage of Ti in the molten iron in the total added titanium in BF, which can be calculated as following Eq. 2:
Figure 3. The TiO 2 additions and Ti content in hot metal (a) and temperature of lining measured by multiple thermocouples 1-6(b)from Jingtang No.1 blast furnace plant data in Shougang Group (Beijing, China) during 2013-2016.
Figure 4. Effects of temperature on titanium content in hot metal and titanium distribution ratio between hot metal and slag.

+9

Titanium distribution between blast furnace slag and iron for blast furnace linings protection
  • Article
  • Full-text available

December 2018

·

3,050 Reads

·

13 Citations

Ironmaking & Steelmaking

Jian Sun

·

·

Mansheng Chu

·

[...]

·

Titanium-bearing materials are commonly adopted for the protection of blast furnace hearth in the actual practices. In this study, the effects of smelting temperature, amount of TiO2 addition, slag basicity and MgO content on the titanium distribution behaviours were experimentally studied using high-temperature smelting, equilibrium and quenching with EPMA techniques. The experiments results show that the increases in smelting temperature and TiO2 content in the slag contributes to the transformation of titanium from the slag into the iron. While the increasing slag binary basicity suppresses the reduction of titanium oxides. The change of MgO content has a slight influence on the titanium distribution. The plant data from the operating blast furnace were also extracted for comparisons and the trends well agree with the present measurements.

Download

Citations (2)

... Blast furnace (BF) is a mature and efficient technology for ironmaking, and different types of iron-containing materials, including titanomagnetite, can be treated in a BF [1][2]. However, in the current practice, titanomagnetite needs to be mixed with high-quality iron ore in the BF to avoid the formation of Ti(C,N) [ [3][4][5][6][7][8][9]. Fine Ti(C,N) particles are highly dispersed within molten slag and hot metal and increase their viscosities [10][11][12]. ...

Reference:

Phase equilibrium studies of titanomagnetite and ilmenite smelting slags
Titanium distribution between blast furnace slag and iron for blast furnace linings protection

Ironmaking & Steelmaking

Jian Sun

·

·

Mansheng Chu

·

[...]

·

... At present, there are many researches on the preparation process, gasification reaction behavior and metallurgical performance optimization of iron coke 5,[20][21][22][23] , but few reports on the effect of iron coke on the reduction of iron-bearing burden (pellet or sinter) in BF. The operation of many blast furnaces has proven that mixing nut coke among iron-bearing burdens can promote the reduction of iron-bearing burdens, reduce coke ratio and improve BF work efficiency [24][25][26][27] . ...

Reference:

Isothermal Reduction Kinetics of the Mixture of Iron Carbon Agglomerates and Sinter
Effects of coal and iron ore blending on metallurgical properties of iron coke hot briquette
  • Citing Article

  • April 2018

Powder Technology

·

Wei Zhao

·

Mansheng Chu

·

[...]

·

Ziwei Ying