rock phosphate electric furnace

Electric Arc Furnace Process - an overview - ScienceDirect
When phosphate rock, phosphorus concentrate, and fluxes are smelted in an electric arc furnace under temperatures of 1400–1500 °C (2552–2732 °F), molten slag is formed
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Effect of P2O5 on the viscosity of yellow phosphorus slag in
2023.2.1 The traditional production method is to heat phosphate rock, silica and coke in an electric furnace, and produce phosphorus by reduction reaction at high
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Studies on extraction of phosphorus from phosphate ore by
2017.10.20 The traditional production method is to heat phosphate rock, silica and coke in an electric furnace, and produce phosphorus by reduction reaction at high
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Electric Furnace - an overview ScienceDirect Topics
The nodulizing of phosphate rock before it is charged to the furnace improves gas release from the heated furnace charge and decreases dust entrainment in the gaseous furnace
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Studies on extraction of phosphorus from phosphate
Studies on extraction of phosphorus from phosphate ore by electric furnace with different fluxing agents Yin Li , Zhengjie Chen , Ruixian Geng Jupei Xia Pages 141-148 Received 04 Jun 2017, Accepted 13 Oct
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Phosphorus and Phosphates SpringerLink
2017.8.2 Phosphoric acid produced by the later process is called the “wet process acid” to distinguish it from “furnace phosphoric acid,” which is produced by hydrating the
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Study on producing yellow phosphorus with electric furnace
Phosphoric acid was selected as bond to make phosphate rock powder into ball material.The physical property parameters of the ball material were measured,and
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Phosphate Rock - an overview ScienceDirect Topics
When phosphate rock, phosphorus concentrate, and fluxes are smelted in an electric arc furnace under temperatures of 1400–1500°C (2552–2732°F), molten slag is formed and
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Phosphorus and Phosphates SpringerLink
2015.1.1 In the first, the rock is charged to an electric furnace with silica and coke to produce elemental phosphorus. The phosphorus then is converted into phosphoric
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Studies on extraction of phosphorus from phosphate ore by electric ...
2018.3.4 GRAPHICAL ABSTRACT ABSTRACT The extraction of phosphorus from phosphate ore using various fluxing agents (i.e. silicon dioxide, silica and potassium feldspar) was studied. To optimize the phosphate rock reduction process, different reaction time, temperature and acidity value for different fluxing agents were investigated. The
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Phosphorus and Phosphates SpringerLink
2017.8.2 In the first, the rock is charged to an electric furnace with silica and coke to produce elemental phosphorus. The phosphorus then is converted into phosphoric acid and other compounds. In the second, the phosphate rock is reacted with sulfuric acid in a medium of phosphoric acid and calcium sulfate crystals to form dilute, impure phosphoric
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Electric Furnace - an overview ScienceDirect Topics
Electric furnace phosphorus production is relatively tolerant of the impurities present in the poorer grades (lower Ca 3 (PO 4) 2 content) of phosphate rock. A high-silica content in the phosphate rock can be accommodated by a calculated decrease in the proportion of silica fed to the furnace, and the presence of carbonaceous matter may be allowed for by
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Phosphoric acid [CHEMICAL PROCESSS INDUSTRIES] PPT
2021.5.9 Coke breeze and sand are mixed in controlled quantities based on phosphate rock analysis. • The electric furnace is 250-300 volt AC- three phase design with power fed to one 100-150 cm dia carbon electrode on each phase. The feed charge in the furnace section drops to 1400- 1450 deg C and reduction to elemental phosphorus
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Sustainable and Clean Utilization of Yellow Phosphorus Slag
2021.4.20 In industrial production, this process consumes about 12.7 t of solid raw materials, which usually include 9.5 t of phosphate rock, 1.5 t of coke, and 1.7 t of silica to produce 1 t of yellow phosphorous [24,25], ... Guoju Precision Electric Furnace Co., Ltd., Luoyang, Henan, China) for reduction smelting.
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PROCESSING OF PHOSPHORUS FURNACE WASTES
from phosphate rock in an electric re duction furnace as shown schemati cally in Figure 1. Phosphate rock is blended with coke, the reducing agent, and silica, which acts as a flux, to form the furnace charge. This charge is delivered to the furnace through vertical tubes which penetrate the fur nace roof. In the furnace, electrical
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Method for preparing yellow phosphorus from phosphate rock
The preparation process includes the steps of: mixing phosphorus ore material with silica and carbon reductant, grinding, adding water and/or coal, re-mixing and palletizing; sintering inside vacuum furnace at 200-400 deg.c for 20-60 min; extruding at 900-1500 deg.c for 60-120 min to produce yellow phosphorus vapor, filtering and water cooling ...
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Phosphate Rock - an overview ScienceDirect Topics
Phosphate Rock. When phosphate rock, phosphorus concentrate, and fluxes are smelted in an electric arc furnace under temperatures of 1400–1500°C (2552–2732°F), molten slag is formed and tapped out from the furnace and goes through an air-cooling or water quenching process. From: The Utilization of Slag in Civil Infrastructure Construction ...
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Gilmour - Major Reference Works - Wiley Online Library
2019.3.26 In reactions related to electric furnace operation, phosphorus is not reactive with carbon monoxide over a wide range of temperatures as shown by its compatibility in furnace gases. At high temperatures, over 1000 °C, phosphorus reacts with steam to generate P 2 O 5 and hydrogen ( 34 ) , see equations below; consequently, the
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U.S. Bureau of Mines, 1992, pp. 977-980.
1 David Morse, "Phosphate Rock," from Minerals Yearbook Volume 1. Metals and Minerals, U.S. Bureau of Mines, 1992, ... The agglomerated phosphate ro ck is charged to an electric arc furnace with coke as a reductant and silica as a flux. The reduction generates a calcium silicate slag and ferrophosphorus, which are tapped, ...
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Report Date October 2002 Field Survey July 2001 1. Project ... - JICA
5 Yellow phosphorus is produced in electric furnace after phosphate rock is mixed with silica sand and coke. 6 Present External Trade Economic Collaboration Department. Also, after 1999, borrower of the Japanese Loan to China was changed to the government (Finance Department) of the People's Republic of China.
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Phosphate Mining and Industry Tennessee
2017.10.8 The production of brown rock became the main source of supply of Tennessee phosphate. At first, all mining operations were done by hand using picks and ten-tined stone forks; ore was hauled by mule
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Electrolysis of Dissolved Phosphate in Molten CaCl2 Prepares
2023.6.16 Commercial P 4 is solely produced by carbothermal reduction. [9,10] Phosphate rock, coke, and silica are mixed in an electric furnace at around 1500 °C.Phosphate in the rock is reduced to elemental phosphorus by carbon in the coke. Due to large amounts of impurities in phosphate rock and introduced from coke, purity control
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Phosphate Rock - an overview ScienceDirect Topics
Crushed phosphate rock, carbon, and silica (SiO2) are heated to 1200–1400°C in an electric furnace from which phosphorus is removed by distillation. From: Inorganic Chemistry (Third Edition) , 2020
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Process Technology for Phosphoric Acid Production in Saudi
1992.1.1 Process Technology of Phosphoric Acid. There are two main commercial processes to produce phosphoric acid: the wet process and the dry [ 1] (electrical furnace) process. Although, the acid produced (technical grade) with the dry process is pure, its production cost is much higher than that of the wet process phosphoric acid (WPPA or
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AP-42, CH 8.9: Phosphoric Acid - U.S. Environmental Protection
Particulate emissions occurring from phosphate rock handling are discussed in Section 11.21, Phosphate Rock Processing. 8.9.3.2 Thermal Process - The major source of emissions from the thermal process is H3PO4 mist contained in the gas stream from the hydrator. The particle size of the acid mist ranges from l.4 to 2.6 micrometers. It is
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ChT 04014 1 - جامعة تكريت
Table 1.2 Phosphate-Rock Processing, Products, and By-Products Process Acidulation Electric-furnace reduction Calcium metaphosphate Calcifiation or defluorination Raw Materials and Reagents Phosphate rock, sulfuric acid, nitric acid, phosphoric acid, hydrochloric acid, ammonia, potassium chloride Phosphate rock, siliceous flux, coke (for
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ITP Mining: Energy and Environmental Profile of the U.S. Mining ...
The furnace burden must be porous enough to allow gases to escape from the reaction zone near the bottom of the furnace. Several agglomeration methods must be employed to prepare phosphate rock fines for the electric furnace. The fines must be sintered and then crushed to size and screened. The ore is screened to remove oversized material.
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FOOD GRADE PHOSPHORIC ACID BY THERMAL PROCESS
In the electric furnace process elemental phosphorous is produced by the electrothermic reduction of phosphate rock with carbon (coke). The silica added to the furnace charge behaves as a strong acid at the high temperatures (about 1500°C) employed in furnace operations and combines with the calcium constituent of the phosphate rock to form
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11.21 Phosphate Rock Processing - US EPA
Florida and North Carolina accounted for 94 percent of the domestic phosphate rock mined and. 89 percent of the marketable phosphate rock produced during 1989. Other states in which phosphate rock is mined and processed include Idaho, Montana, Utah, and Tennessee. Alternative flow diagrams of these operations are shown in Figure 11.21-1.
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