Analysis of Cylindrical Briquette Dimension on Total Iron Content and the Degree of Metallization in Direct Reduction Process of Iron Ore and Iron Sand Mixture

2019 ◽  
Vol 964 ◽  
pp. 19-25 ◽  
Author(s):  
Fakhreza Abdul ◽  
Sungging Pintowantoro ◽  
Alief Bram Hidayatullah
Keyword(s):  
Gas Flow ◽  
Iron Ore ◽  
Raw Materials ◽  
Direct Reduction ◽  
Reduction Process ◽  
Total Content ◽  
Outer Diameter ◽  
Direct Reduction Process ◽  
Sand Mixture ◽  
Fe Content

Indonesia has abundant resources or raw materials, especially the iron sand raw materials. But, the iron sand processing in Indonesia is still low. Even though, the steel demand in Indonesia is still high. So, the iron sand processing product as raw materials in steelmaking is the solution of it. In this research, the study was conducted by using the variation of briquette dimension of mixture of iron sand and iron ore in Direct Reduction process. The aim of this research is to study the effect of briquette dimension on Fe content and degree of metallization of the Direct Reduced Iron (DRI). First, the iron sand and iron ore were crushed and shieved until pass the 50 mesh standar size. Then, iron sand and iron ore were mixed and briquetted based on the variation of dimension. There are three variations of briquette dimension. Then, the briquettes was reduced at 1250°C for 12 hours. The reduced briquettes then were analyzed using XRD, XRF and degree metallization calculation. The result showed that the dimension of briquette affect the Fe content and the degree metallization of DRI. The dimension of briquette will affect the reductor gas flow in the crucible, so the rate and direction of reduction process of iron oxide will be affected too. The best briquette is Briquette B (7.9 cm for inside diameter, 15.1 cm for outer diameter and 19.5 cm for the height), with 75.02% for Fe total content and 66.52% for degree of metallization. This was due to The briquette B has the most evenly diffused dimension either vertically and horizontally.

Study on Direct Reduction Process of Cylindrical Briquetting Hematite

2020 ◽  
Vol 988 ◽  
pp. 36-41
Author(s):  
Andinnie Juniarsih ◽  
Anistasia Milandia ◽  
Actur Saktianto ◽  
Suryana
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Rate ◽  
Transfer Rate ◽  
Iron Ore ◽  
Raw Materials ◽  
Direct Reduction ◽  
Reduction Process ◽  
Iron And Steel ◽  
Direct Reduction Process ◽  
Rate Study

There are two types of iron resources such as primary iron ore and iron sand. In general, primary iron ores use as raw materials in iron and steel making and can reduce directly. In Direct reduction process, Fe2O3 (hematite) is converted to metallic iron by the removal of oxygen. This work presents a heat transfer rate study for direct reduction process of iron ore cylindrical briquette. An investigation has been carried out of different reduction parameter such as different sizes cylindrical geometry over temperatures ranging from 700°C to 1100°C for reaction time from 10 minutes to 1 hour. The result was indicated that the value of the heat transfer rate decreases in the core and outer parts of the cylinder briquettes.

Separation of aluminium and preparation of powdered DRI from lateritic iron ore based on direct reduction process

2016 ◽  
Vol 55 (3) ◽  
pp. 345-355 ◽  
Author(s):  
T. Jiang ◽  
L. Yang ◽  
G. Li ◽  
J. Luo ◽  
J. Zeng ◽  
...  
Keyword(s):  
Iron Ore ◽  
Direct Reduction ◽  
Reduction Process ◽  
Direct Reduction Process

Development Prospect of Rotary Hearth Furnace Process in China

2013 ◽  
Vol 746 ◽  
pp. 533-538 ◽  
Author(s):  
Ying Yi Zhang ◽  
Yuan Hong Qi ◽  
Zong Shu Zou ◽  
Yun Gang Li
Keyword(s):  
Resource Allocation ◽  
Iron Ore ◽  
Direct Reduction ◽  
Reduction Process ◽  
Economic Security ◽  
Practical Significance ◽  
Low Grade ◽  
Rotary Hearth Furnace ◽  
Hearth Furnace ◽  
Direct Reduction Process

Summarized the development situation of rotary hearth furnace (RHF) direct reduction technology, ore resource allocation situation and direct reduction iron demand. The survey results show that: China's iron ore resource allocation heavily rely on imported iron ore, gas-based direct reduction process (MIDREX, HYL-III, FINMET) is not likely to be the mainly direct reduced iron (DRI) process in China. However, non coking coal resources is very rich in China, research and development of coal-based direct reduction process (such as FASTMET and ITMK3 process) has important practical significance, it can strengthen the comprehensive utilization on low grade iron ore, associated mineral resources and iron & steel plant dust and sludge. It has great significance to alleviate steel scrap demand and stable development of the iron and steel industry and protect the national economic security in China.

FIOR — The Esso fluid iron ore direct reduction process

JOM ◽  
1966 ◽  
Vol 18 (2) ◽  
pp. 237-242 ◽  
Author(s):  
J. W. Brown ◽  
D. L. Campbell ◽  
A. L. Saxton ◽  
J. W. Carr
Keyword(s):  
Iron Ore ◽  
Direct Reduction ◽  
Reduction Process ◽  
Direct Reduction Process

scholarly journals Optimization of the Iron Ore Direct Reduction Process through Multiscale Process Modeling

Materials ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1094 ◽  
Author(s):  
Rami Béchara ◽  
Hamzeh Hamadeh ◽  
Olivier Mirgaux ◽  
Fabrice Patisson
Keyword(s):  
Process Modeling ◽  
Iron Ore ◽  
Direct Reduction ◽  
Reduction Process ◽  
Direct Reduction Process

scholarly journals Carbon Impact Mitigation of the Iron Ore Direct Reduction Process through Computer-Aided Optimization and Design Changes

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 367
Author(s):  
Rami Béchara ◽  
Hamzeh Hamadeh ◽  
Olivier Mirgaux ◽  
Fabrice Patisson
Keyword(s):  
Co2 Emissions ◽  
Iron Ore ◽  
Direct Reduction ◽  
Reduction Process ◽  
Industrial Sector ◽  
Direct Reduction Process ◽  
Design Changes ◽  
Computer Aided ◽  
Top Gas Recycling ◽  
Gas Recycling

The steel industry is known to have one of the highest environmental impacts on the industrial sector, especially in terms of CO2 emissions. The so-called direct reduction route, which makes use of reformed natural gas along with top gas recycling to reduce iron oxide pellets with H2 and CO, is responsible for lower CO2 emissions than the classic blast furnace route and is currently under development. The present article focuses on the direct reduction process and discusses means to further decrease the CO2 emission rate. A set of 10 operating parameters were simultaneously changed according to computer-aided optimization. The results provide about 15% improvement over original emissions for comparable output values.

scholarly journals DEVELOPMENT OF INTEGRATED GAS INSTRUMENTATION SYSTEM IN DIRECT REDUCTION PLANT

2016 ◽  
Vol 2 (1) ◽  
pp. 39
Author(s):  
A. Adriansyah ◽  
F. Rahman
Keyword(s):  
Specific Gravity ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Gas Flow ◽  
Direct Reduction ◽  
Reduction Process ◽  
Melting Process ◽  
Direct Reduction Process ◽  
Reduction Plant ◽  
Gas Measurement

<p class="TRANSAffiliation">Direct reduction is the removal of oxygen from iron without melting process. In direct reduction process, the presence of mixture gas in accordance levels largely determines the performance of the iron produced. Therefore, it needs gas sensors system which has high accuracy and reliability in this process. Unfortunately, there are some things that cause decreasing in the accuracy and reliability of the gas sensor in this process. This paper aims to offer a system that can preserve the accuracy and reliability of the gas measurement system called as Integrated Gas Instrumentation System. The system tends to integrate gas sensor component using Specific Gravity (SG) with other components, such as water trap, filter regulator and monitor gas flow rate. The values of Specific Gravity Meter based on process that display in DCS system are compared with lab results for three type of experiments. Based on experiment results it can be said that the proposed system is able to improve the accuracy and reliability of direct reduction process.</p>

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