However, froth flotation is the widely used beneficiation process. It was estimated that more than 60% of the world's commercial phosphate is concentrated by flotation process (Sis and Chander 2003a; Santana et al. 2011). Froth flotation process, well known today, began about 110 years ago in Australia (Fuerstenau et al. 2007).
There still remains certain amount of phosphorus in the phosphate tailings after the flotation process (Table 1). The phosphorus (presents as PO 4 3− ) concentration increases quickly and reaches a maximum level in about 30 min when the phosphate tailings is soaked in distilled water ( Fig. 3 (a)), which indicates the dissolution of ...
Phosphate rock needs processing to reduce the content of gangue minerals such as silicates, carbonates, and clays to meet the requirements of the phosphate industry. Froth flotation method has been an important part of the concentration process since the 1920s and today, more than half of the world's marketable phosphate is produced by froth ...
Froth flotation method has been an important part of the concentration process since the 1920s and today, more than half of the world's marketable phosphate is produced by froth flotation. The literature on the processing of phosphate rocks by flotation is critically …
US3462016A US663640A US3462016DA US3462016A US 3462016 A US3462016 A US 3462016A US 663640 A US663640 A US 663640A US 3462016D A US3462016D A US 3462016DA US 3462016 A US3462016 A US 3462016A Authority US United States Prior art keywords phosphate stage flotation concentrate underflow Prior art date Legal …
Phosphate flotation using mixed collectors has been proved to give greater selectivity and high recovery of apatite comparing with fatty acids, which require selective depressant to be effective.
Froth flotation has become an integral part of phosphate concentration process. In this study, double reverse flotation was applied to recover apatite from phosphate ore. …
Flotation is the most used beneficiation process for phosphate rock. It remains arguably the preferred method, ensuring the purification of over 50 % of global phosphate ore reserves intended for the market (Liu et al., 2019). During this process, air bubbles are introduced into the flotation pulp and attach to the target gangue minerals which ...
This analysis was conducted on both the phosphate ore and the carbonate and phosphate concentrates obtained from an optimized flotation process. The results confirmed the success of flotation, yet 12% CFA (≈ 4% P 2 O 5 ) was detected in the carbonate concentrate and was attributed to mineral associations and fine particles entrainment.
In the direct flotation process the valuable mineral is coated with a special hydrocarbon (fatty acid) that makes coated particles behave the same as a waxed car. Once the phosphate …
01 Phosphate ore direct flotation process. After grinding, the phosphate ore reaches the degree of monomer dissociation.After adding water to a certain concentration in the pulp, a collector is added to enrich the phosphate minerals in the product. During flotation, inhibitors are added to the pulp to inhibit the floating of gangue minerals such as silicates and …
According to the results of several studies on the flotation of phosphate ores, reverse flotation can be used as a unique process for sedimentary phosphate ore (Abdel-Khalek, 2000; Boujlel et al., 2019). The availability of high carbonate and siliceous contents in sedimentary PMWR represents a limitation for the flotation process.
US3292787A US336639A US33663964A US3292787A US 3292787 A US3292787 A US 3292787A US 336639 A US336639 A US 336639A US 33663964 A US33663964 A US 33663964A US 3292787 A US3292787 A US 3292787A Authority US United States Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a …
US3292787A - Phosphate flotation process - Google Patents Phosphate flotation process Download PDF Info Publication number US3292787A ... flotation phosphate ore per ton viscosity Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no ...
The fatty acid flotation of a difficult-to-float igneous phosphate ore (26.2% P 2 O 5, 15.4% Fe 2 O 3) was investigated through batch flotation tests in the presence of soda ash.The poor flotation of this otherwise high quality ore was attributed to very high concentrations of calcium and sulfate ions (about 1000 and 2000 mg/L, respectively) found in process water, …
Phosphate flotation process Download PDF Info Publication number US3292787A. US3292787A US336639A US33663964A US3292787A US 3292787 A US3292787 A US 3292787A US 336639 A US336639 A US 336639A US 33663964 A US33663964 A US 33663964A US 3292787 A US3292787 A US 3292787A Authority US United States
Reverse froth flotation is a traditional and effective separation method for phosphorite ores, the principle of which is to separate phosphorite and gangue quartz through …
Choosing the type of flotation depends on: (i) The phosphate mineral's initial grade, (ii) the economics of the reagents used, and (iii) the …
US3292787A US336639A US33663964A US3292787A US 3292787 A US3292787 A US 3292787A US 336639 A US336639 A US 336639A US 33663964 A US33663964 A US 33663964A US 3292787 A US3292787 A US 3292787A Authority US United States Prior art keywords flotation phosphate ore per ton viscosity Prior art date Legal status …
From programs that optimize the phosphate flotation process for maximum recovery to advanced scale control solutions that reduce the amount of downtime needed for scale cleaning, Nalco Water offers a comprehensive suite of solutions that can be customized to fit your needs. By choosing the appropriate partner, you can significantly improve the ...
Froth flotation method has been an important part of the concentration process since the 1920s and today, more than half of the world's marketable phosphate is produced by froth flotation.
Phosphate ore is the dominating natural resource for the production of fertilizers and phosphorous chemical products. Flotation is the most widely employed technique to …
Since it was patented in 1942, the Crago process with fatty acid rougher flotation followed by deoiling and amine cleaner flotation has become the standard for phosphate …
One generally accepted process comprises suspending finely ground phosphate rock in a slightly alkaline aqueous solution containing a carboxylic acid or other anionic flotation reagent and subjecting the suspension to a first froth flotation step in which the phosphate values are concentrated and collected in the froth and a substantial portion of the siliceous gangue …
Froth flotation method has been an important part of the concentration process since the 1920s and today, more than half of the world's marketable phosphate is produced by froth flotation....
flotation process phosphate flotation phosphate flotation Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Application number CA833610A Inventor H. G. Bushell Charles E ...
Phosphate Reverse Froth Flotation Process. The reverse flotation process is to adjust PH of the slurry to 5.0 ~ 6.0, inhibitphosphate mineral by adding inhibitors, and then enrich carbonate in the with a …
The Crago process for the flotation of sedimentary phosphate was patented in 1942. This direct-reverse flotation process consists of a fatty acid rougher stage followed by deoiling and an amine cleaner flotation stage which is the standard for phosphate flotation in Florida and North Carolina [ 3 ].
20 mesh is treated by 2-stage flotation. The flotation process uses hydrophilic or hydrophobic chemical reagents with aeration to separate suspended particles. Phosphate rock mined in …
A novel quaternary ammonium salt collector, LH-01, was employed for the reverse cationic flotation of a magnesium-depleted concentrate (P 2 O 5 grade of 19.72wt%, SiO 2 content of 44.26wt%). We achieved an outstanding phosphate concentrate with a P 2 O 5 grade of 35.16wt%, a SiO 2 content of 6.06wt%, and a P 2 O 5 recovery of 75.88%. This process …
Applicable type: Weathered or mud-rich phosphate rock Process 2: Flotation Principle: This is the most commonly used phosphate beneficiation way. Positive flotation is to use the flotation agent to float phosphorus …
