Oil shale ash has been described as an alternative calcium source for both CO 2 absorption and to produce precipitated calcium carbonate (PCC)type filler. The current study focuses on the feasibility of the technologies for upgrading the alkaline mineral waste on the basis of mathematical models which define the operating parameters and simulate the leaching of watersoluble waste ash ...
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Calcium extraction from steelmaking slag and production of precipitated calcium carbonate from calcium oxide for carbon dioxide fixation. J Ind Eng Chem. 53, 233240 (2017).
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The high calcium content of solid wastes such as steelmaking slags makes them suitable raw materials for CO 2 carbonation [8], [9]. Therefore, numerous efforts have been devoted to maximizing the calcium extraction efficiency and optimizing the production of precipitated calcium carbonate from steel slags.
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Precipitated calcium carbonate (PCC) is produced by precipitating a calcium salt out of a solution under defined conditions. Normally, a filtered solution of calcium hydroxide Ca(OH)2 (from burnt lime) is used as the calcium source. This must not contain any colored impurities. Calcium carbonate is precipitated by the admixture of gaseous carbon dioxide or sodium carbonate Na2CO3.
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In this work, experiments were performed to determine the filterability of calcium carbonate produced with an alternative calcium carbonate production concept. The concept uses steelmaking slag as raw material and has potential to fix CO2 emissions and utilize steelmaking slag, simultaneously. As calcium carbonate is precipitated in a solution containing ammonium chloride, calcium chloride ...
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Producing precipitated calcium carbonate (PCC) from steelmaking slag is a technology that contributes to the reduction of carbon dioxide emissions from iron and steel industries. While the carbon dioxide emissions from the sector are large, it could benefit from this option by utilizing its own byproducts, steelmaking slags for fixation of CO 2.
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Calcium Scales on Steel and Aluminum Coupons Using Brines 2, 3, and 4. Calcium ... The Kinetics of Carbonate Scaling—Application for the Prediction of Downhole Carbonate ... Maurin G.; Gabrielli C. Effect of Magnetic Water Treatment on Calcium Carbonate Precipitation: Influence of the Pipe. Chem. Eng. Process 2009, 48, . 10. ...
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The current high global demand for highquality paper, paint, adhesive/sealant, and plastic, filler industries cannot survive without unique and highquality precipitated calcium carbonate (PCC). They are used as fillers, additives, and reinforcements. PCC is a key constituent of the modern paper and plastic industry. This article reports the effect of various organic and inorganic additives ...
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Ground and Precipitated Calcium Carbonate Market to Reach US Billion by 2033, Finds Latest Study of FMI. North America is likely to secure % of the share during the forecast period. The ...
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Carbonate, bicarbonate, and controlled precipitation of calcium carbonate can act as (mildly effective) corrosion inhibitors for mild steel. Many theoretical models have been developed and attempt to predict the calcium carbonate scaling tendency with Langelier [3] (LSI) and Ryznar [4] (RSI) indices being the most commonly used predictors.
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Downloadable (with restrictions)! The production of precipitated calcium carbonate (PCC) from steel slag has been proposed as a potential method of simultaneously reducing the CO2 emissions from the steelmaking process and turning its waste stream into a valuable product. On average the production of one ton of steel results in two tons of CO2 emissions and 600kg of slag.
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Scaling is the deposition of salts having low solubility and often occurs due to changes in pH, temperature and pressure conditions which in turn affects the supersaturation levels and solubility of the salts. Scale formation inside a pipe is shown in Fig. Calcium carbonate is the predominant constituent in most of the scale deposits.
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Accelerated carbonation can promote the application of steel slag in construction materials. This method can not only resolve the fatal volume expansion of steel slag, but also sequestrate CO2. ... which could make CO2 fixate into precipitated calcium carbonate (PCC) of valueadded products, is an important technology that is used to reduce ...
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The formation of lamellar calcium carbonate was also reported by Liu et al. reported precipitation from calcium chloride and sodium carbonate solution in the presence of polysaccharides obtained from sticky rice. 38 As shown in Fig. 2C, nonuniform aggregated particles were observed using EG. However, spherical yarn shape PCC particles were ...
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Microbially induced calcium carbonate precipitation (MICCP) is a naturally occurring biological process in which microbes produce inorganic materials as part of their basic metabolic activities. This technology has been widely explored and promising with potential in various technical applications. In the present review, the detailed mechanism ...
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Producing precipitated calcium carbonate (PCC) from steelmaking slag is a technology that contributes to the reduction of carbon dioxide emissions from iron and steel industries. While the carbon dioxide emissions from the sector are large, it could benefit from this option by utilizing its own byproducts, steelmaking slags for fixation ...
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The experiments were seeded with calcium carbonate seeds with a mean diameter of 27 μm. The seeds were synthetized in the lab and contained calcite, vaterite and aragonite phases. Experimental SetUp. A simplified flowsheet of the setup built for continuous calcium carbonate precipitation experiments is shown in Figure 1. An 850 ml, double ...
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The indirect CO 2 mineralization by using Ca/Mgcontaining industrial alkaline byproducts or wastes is a promising way for mitigation of CO 2 emissions and valorization of wastes, although plagued by the utilization of precipitated calcium carbonate (PCC) if lowvalue product is obtained. It is difficult to acquire specific PCC with targeted morphology for commercial use since many parameters ...
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See other industries within the Manufacturing sector: Aerospace Product and Parts Manufacturing, Agriculture, Construction, and Mining Machinery Manufacturing, Alumina and Aluminum Production and Processing, Animal Food Manufacturing, Animal Slaughtering and Processing, Apparel Accessories and Other Apparel Manufacturing, Apparel Knitting Mills, Architectural and Structural Metals ...
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The production of precipitated calcium carbonate (PCC) from steel slag has been proposed as a potential method of simultaneously reducing the CO 2 emissions from the steelmaking process and turning its waste stream into a valuable product. On average the production of one ton of steel results in two tons of CO 2 emissions and 600 kg of slag. Globally, more than 400 Mt of steel slag are ...
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Precipitated Calcium Carbonate (PCC) created by man in a matter of hours. Calcium carbonate can also be produced synthetically in the form of Precipitated Calcium Carbonate (PCC). PCC is created through the conversion of limestone into CaO and CO 2 and the subsequent reaction of both purified components in a chemical reactor. The final ...
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eries; (4) the iron and steel industry; and (5) the petrochemical Recently, iron and steel industry has tried to reduce CO by using mineral carbonation. Mineral carbonation can reduce CO 2 and waste from iron and steel industry. Mineral carbonation refers to the production of environmentally harmless carbonate where CO 2 and calcium or
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Indirect CO2 mineral sequestration, which could make CO2 fixate into precipitated calcium carbonate (PCC) of valueadded products, is an important technology that is used to reduce greenhouse gas emissions economically. It can be conducted in two steps, one of which has been investigated in the previous paper. In this work, extraction of calcium ions from steelmaking slag using a novel ...
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Direct carbonation, because of its simplicity, can be used as a CO 2 reduction technology in power plants and steel mills that generate a lot of CO 2, but its ability to produce highquality calcium carbonate is limited. On the other hand, indirect carbonation can produce highquality calcium carbonate.
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Kodama et al. [13] focuses on CO 2 capture and uses therefore a CO 2 absorption tower. However, carbonate precipitation is likely to be problematic in a spray tower (and especially in a packed bed column). In the present concept the focus is on PCC production, with careful control of temperature, residence time, and pH necessary for producing a PCC of certain shape and size [6], [18].
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See other industries within the Manufacturing sector: Aerospace Product and Parts Manufacturing, Agriculture, Construction, and Mining Machinery Manufacturing, Alumina and Aluminum Production and Processing, Animal Food Manufacturing, Animal Slaughtering and Processing, Apparel Accessories and Other Apparel Manufacturing, Apparel Knitting Mills, Architectural and Structural Metals ...
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In North America over 2 million tons involve production of precipitated calcium carbonate (PCC) (Anon. 1999), and paper filling is by far the major use of PCC. An exact ratio between mineral usage for filling vs. coating is often hard to determine, since many mineral products can be used in either application. Furthermore, coating materials ...
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Calcium carbonate nanocomposites. Y. Lin, C.M. Chan, in Advances in Polymer Nanocomposites, 2012 Introduction: applications of calcium carbonate nanoparticles. Calcium carbonate particles have been used in the plastics industry for many years. The original purpose of adding ground calcium carbonate (GCC) particles as filler material for plastics was to reduce material costs.
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Design of a continuous process setup for precipitated calcium carbonate production from steel converter slag ChemSusChem. 2014 Mar;7(3):90313. doi: / . ... Different precipitated calcium carbonate crystals (calcite and vaterite) are generated in different parts of the setup. Keywords : ...
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PCC stands for Precipitated Calcium Carbonate—also known as purified, refined or synthetic calcium carbonate. It has the same chemical formula as other types of calcium carbonate, such as limestone, marble and chalk: CaCO3. The calcium, carbon and oxygen atoms can arrange themselves in three different ways, to form three different calcium ...
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This study aims to review the potential for microbial calcium carbonate precipitation (MCP) as an effective method for environmental remediation and its application in construction restoration. This review aims to provide indepth knowledge of microbial calcium carbonate precipitation through the concrete denitrification process. One of the critical parameters reviewed in this study is the ...
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