Experimental Study on Flotation Process Conditions of Lead-Zinc Ore

Abstract

On the basis of analyzing sample properties of lead-zinc ore, the optimum experimental condition combination was obtained from systematic experimental studies of the conditions. The experimental condition combination was validated by the full process closed-circuit experiment, which showed that the good separation indexes on lead grade of 59.78% in lead concentrates, the lead recovery of 87.50%, and zinc concentrate grade of 56.33%, the zinc recovery of 93.60%, and sulfur concentrate contained 0.50% of lead, 0.47% of zinc.

Beneficiation Studies on Low-Grade Complex Polymetallic Lead-Zinc Ore of Duddar (Lasbela) Balochistan, Pakistan

“…At lower agitation, no doubt, the grade is improved but the recovery decreases slightly due to the fact that the middling particles being partly hydrophilic remain in pulp. It is desirable to have a higher recovery at rougher stage rather than grade so this value was selected (Li and Zhang, 2012). But at cleaning and re-cleaning stages, a lower agitation speed of 1000 rpm and 900 rpm was found suitable to produce cleaner concentrates of greater purity with reasonable recovery i.e.…”

“…Flotation reagents were added as additional dosage during each cleaning flotation. Regrinding of the middlings products consisting mainly of unliberated minerals, both the scavenger product and the cleaner tailings, is common practice in most flotation plants (Li and Zhang, 2012). The rougher concentrates obtained and cleaning tailings were re-ground for further liberation of fine mineral grains and cleaned by two cleaning operations to get the final concentrates.…”

“…Silvestre et al (2009) investigated the role of three important dispersants (sodium silicate, sodium polyacrylate and sodium hexametaphosphate) in the selective flotation of galena and sphalerite. Li and Zhang (2012), performed experimental study using flotation process on multi metal lead-zinc sulphide ore deposit which showed good separation of lead concentrate (59.78% Pb) with recovery of 87.50%, and zinc concentrate 56.33% Zn with recovery of 93.60%. Yuan et al (2012) investigated a refractory lead-zinc ore with high pyrite.…”

Optimization of Galena Flotation Process of Irankouh Complex Ore Using A Statistical Design of Experiments

“…Although flotation is known as the main method for enrichment of this ore, operation costs and complexity of this method should be considered for better selection and optimization of chemical reagent types and dosage to get higher recovery and higher grade concentrates (Li and Zhang, 2012). To make the flotation process commercially efficient, physicochemical properties of the ore must be determined and the amount of chemical consumption must be tuned to reduce the costs for production higher grade of concentrates at maximum recovery (Mehrabani et al, 2010).…”

“…To make the flotation process commercially efficient, physicochemical properties of the ore must be determined and the amount of chemical consumption must be tuned to reduce the costs for production higher grade of concentrates at maximum recovery (Mehrabani et al, 2010). In addition in galena flotation it is important to completely remove the zinc in lead concentrates to reduce the waste of this resource and prevent penalty to concentrates (Wills, 2011).For galena, zinc and copper metals usually have been identified as recoverable valuable minerals (Li and Zhang, 2012). Although the amount of these minerals cannot be completely removed, they should be minimized.…”