Steel Converter Slag as a Raw Material for Precipitation of Pure Calcium Carbonate

2008 ◽  
Vol 47 (18) ◽  
pp. 7104-7111 ◽  
Author(s):  
Sanni Eloneva ◽  
Sebastian Teir ◽  
Justin Salminen ◽  
Carl-Johan Fogelholm ◽  
Ron Zevenhoven
Keyword(s):  
Calcium Carbonate ◽  
Converter Slag ◽  
Raw Material ◽  
Steel Converter

On a new hydraulic binder from stainless steel converter slag

2013 ◽  
Vol 25 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Yiannis Pontikes ◽  
Lubica Kriskova ◽  
Özlem Cizer ◽  
Peter Tom Jones ◽  
Bart Blanpain
Keyword(s):  
Stainless Steel ◽  
Converter Slag ◽  
Hydraulic Binder ◽  
Steel Converter

PREPARATION OF PRECIPITATED CALCIUMCARBONATE USING ADDITIVE AND WITHOUT ADDITIVE

2015 ◽  
Vol 77 (3) ◽  
Author(s):  
Anuar Othman ◽  
Nasharuddin Isa ◽  
Rohaya Othman
Keyword(s):  
Calcium Carbonate ◽  
Calcium Hydroxide ◽  
Mineral Composition ◽  
Hydrated Lime ◽  
Raw Material ◽  
Precipitated Calcium Carbonate ◽  
Uniform Size ◽  
The One

Precipitated calcium carbonate (PCC) chemically can be synthesized in the laboratory. In this study, hydrated lime or calcium hydroxide was used as raw material with sucrose as additive to produce PCC. The process was compared with the one without additive. PCC produced was observed based on morphology, mineral composition and size by using Fesem-Edx and LPSA, respectively. PCC products without additive demonstrated fine and more uniform size of calcite PCC as compared to the one with additive. Nevertheless, the process with additive produced more PCC product than without additive.

Production of Primary Magnesium by the Aluminothermic Reduction of Magnesia Extracted from Dolomite Ore

2014 ◽  
Vol 788 ◽  
pp. 28-33
Author(s):  
Peng Deng ◽  
Yu Qin Liu ◽  
Wen Gui Yao ◽  
Hong Wen Ma
Keyword(s):  
Calcium Carbonate ◽  
Magnesium Oxide ◽  
Vacuum Condition ◽  
Reduction Ratio ◽  
Raw Material ◽  
Aluminothermic Reduction ◽  
Molar Ratio ◽  
New Process

In this paper, a new process for the production of the primary magnesium is introduced using the dolomite as the raw material. The magnesia and calcium carbonate were prepared from dolomite by acidification. The content of magnesium oxide can reach 98.92% about the magnesia obtained. The magnesia is used to produce primary magnesium by aluminothermic reduction under vacuum condition. The reduction ratio of MgO can be up to 86.14% under the temperature of 1200°C for 5hrs, briquetting pressure of 10MPa and the molar ratio of MgO to Al of 3:2. The content of magnesium is more than 99.90%. The major phases in the briquette residue are corundum and spinel, which can be used as refractory.

Experiment Research on Preparation Pigment Type Magnetic Iron Oxide Powder Utilizing Magnetic Separated Slag

2013 ◽  
Vol 683 ◽  
pp. 595-598
Author(s):  
Yu Yuan Cui ◽  
Mao Fa Jiang ◽  
Pei Yang Shi ◽  
Cheng Jun Liu
Keyword(s):  
Iron Oxide ◽  
Reaction Time ◽  
Iron Powder ◽  
Converter Slag ◽  
Raw Material ◽  
Experiment Research ◽  
Pigment Type ◽  
Roasting Temperature ◽  
And Performance ◽  
Covering Power

This per systematically studies the influence of roasting temperature and time to the composition and performance of magnetic iron powder, with magnetic separated converter slag as raw material, and low-temperature roasting-magnetic separation craft is also used with analyzing methods of chemical, XRD, tinting strength and so on. The investigation reveals that: pigment type iron powder with high tinting strength and covering power can be prepared with magnetic separated converter slag. Iron content and tinting strength of the iron powder rise with reaction temperature, while the covering power tends to decrease. Tinting strength of the iron powder tends to rise with extending of reaction time, while covering power rises in the first and reduces afterward, with highest covering power of 56g•m-2 at reaction time of 30min.

Explorative Synthesis of Magnetic Ca-Fe-O Compounds by Mixing Precipitated CaCO3 from Limestone and Iron Sand Extracted – Fe2O3.H2O

2015 ◽  
Vol 827 ◽  
pp. 203-207 ◽  
Author(s):  
Mastuki ◽  
Malik Anjelh Baqiya ◽  
Darminto
Keyword(s):  
Calcium Carbonate ◽  
Sintering Temperature ◽  
Raw Material ◽  
Phase Content ◽  
Precipitated Calcium Carbonate ◽  
Mixing Method

Synthesis of Ca-Fe-O using solution mixing method employing CaCO3 and Fe2O3•H2O has been conducted. Extraction of limestone as the raw material of precipitated calcium carbonate (PCC) and iron sands as that of Fe2O3•H2O was prepared to explore various compound of C-Fe-O, where the CaFe4O7 phase is mainly expected. The PCC and Fe2O3•H2O each are dissolved in 1 M HNO3 and mixed to be most homogeneous. The results of the synthesis are characterized by DTA/GTA and then sintered at temperatures of 800°C, 900°C and 1000°C.The sintered samples were characterized by XRD, FTIR, and VSM. The sintering temperature at 800°C, 900°C and 1000°C gave result the phase content of CaFe4O7 being respectively 55.42%, 44.55% and 36.39%. Other major phases in the Ca-Fe-O samples consist of Ca2Fe9O13 and Ca4Fe14O25. The remanence value of the corresponding samples is 2.11, 1.28, and 1.74 emu/g respectively.

Sign in / Sign up

Export Citation Format

Share Document