8results about How to "Efficient flotation separation" patented technology

The invention provides a composite flotation reagent for separating feldspar and quartz and a flotation method. The composite flotation reagent for separating the feldspar and the quartz comprises a first flotation agent, a second flotation agent and a third flotation agent, and the first flotation agent comprises, by mass, 20-25 parts of a collecting agent and 1-4 parts of a pH adjusting agent; and the second flotation agent comprises the following components in parts by mass: 6-8 parts of an inhibitor and 1-4 parts of mixed phosphate. According to the method, one-time flotation separation of quartz and feldspar is conducted on the lepidolite tailings through the flotation reagent, quartz fine sand with the SiO2 content higher than 99% can be obtained, the standard requirement of glass industry materials is met, and the effect is close to the flotation separation effect of hydrofluoric acid; therefore, the flotation process is simplified under the condition that the flotation effect is guaranteed, and compared with flotation separation conducted through a hydrofluoric acid method, the influence of flotation separation conducted through the composite flotation reagent for separating feldspar and quartz in the embodiment on the environment is greatly reduced.

The invention discloses a combined collecting agent for direct flotation of lepidolite and application of the combined collecting agent. The combined collecting agent is formed by compounding hexadecylsulfonic acid sodium salt and lauryl amine according to the molar ratio of 1: 3-3: 1. And lepidolite ore samples to be separated and water are mixed and stirred to be uniform, flotation ore pulp is obtained, after the pH value of the ore pulp is adjusted to the required pH value, the combined collecting agent is added, direct flotation desilicication is conducted, and a lepidolite concentrate product is obtained. The combined collecting agent shows good selectivity and excellent separation performance when being applied to the field of direct flotation desilicication of lepidolite, and has the advantages that the agents are easy to obtain, the preparation process is simple, and the dosage of the agents is small.

The invention discloses a fatty acyl amino acid ester thiourea compound and a preparation method and application thereof in flotation, the thiourea compound has amino acid groups and ester groups, and the melting point of the compound is effectively reduced. When being used as a collecting agent to be applied to the metal mineral flotation process, the metal mineral flotation agent enhances the dispersity of the metal mineral flotation agent in an aqueous solution, thereby enhancing the flotation separation and extraction of non-ferrous metal sulfide ores. The fatty acyl amino acid ester thiourea compound provided by the invention has the characteristics of natural raw material source, high biodegradability, simple process route, environmental protection, high metal recovery rate and the like, meets the requirements of green chemical production, and is suitable for industrial production.

The invention provides a flotation separation method for molybdenite and bismuthite. The flotation separation method comprises the following steps that an ore sample containing the molybdenite and the bismuthite is sorted, crushed and ground to serve as a flotation sample; minerals and water are mixed to form ore pulp, and the pH value of the ore pulp is adjusted to a certain value; adding a certain amount of oxidizing agent into the ore pulp and stirring; adding a certain amount of inhibitor into the ore pulp, and stirring; a certain amount of collecting agent is added into the ore pulp, and stirring treatment is conducted; adding a certain amount of foaming agent into the ore pulp, and stirring; and S5, carrying out foam flotation on the ore pulp obtained in the step S5, respectively filtering, drying and testing a foam product and a tank bottom product after flotation, and calculating the recovery rate. The efficient and environment-friendly collecting agent and selective inhibitor are provided, efficient separation of molybdenite and bismuthite can be achieved, the utilization efficiency of mineral resources is improved, the influence on the environment is further reduced, and technical support is provided for sustainable development of mines.

This invention relates to the field of mineral processing technology, and particularly to a depressant for molybdenum sulfide ore and a flotation separation method and application for copper-molybdenum sulfide minerals. The depressant comprises polyphenols; the polyphenols have the molecular formula C0.05. 32 H 30 O 11 The molecular weight is 590.57 g / mol, and the degree of polymerization is 2-11. The molybdenum sulfide mineral depressant is used for the flotation of copper-molybdenum sulfide minerals. The copper-molybdenum sulfide minerals contain chalcopyrite and molybdenite, with a mass ratio of 1-2:1. This invention provides a molybdenum sulfide mineral depressant and a flotation separation method and application for copper-molybdenum sulfide minerals. The aim is to solve the problems of high toxicity, high loss rate, and high intermingling of existing copper-molybdenum sulfide mineral separation flotation depressants, and to achieve effective separation of chalcopyrite and molybdenite.

The invention discloses a scheelite combined collecting agent and a preparation method and application thereof, and belongs to the technical field of mineral processing. The combined collecting agent comprises the following components in percentage by mass: 2%-5% of sucrose laurate, 85%-92% of C16-C18 fatty acid salt and 6%-10% of hexamethyldisiloxane. The combined collecting agent is applied to flotation of scheelite, and efficient recovery of scheelite can be achieved through closed-loop flotation of one-time roughing, three-time refining and two-time sweeping. According to the combined collecting agent, the problem that a traditional fatty acid collecting agent is poor in solubility is solved, the combined collecting agent is simple in preparation process, good in collecting performance and selectivity, good in dispersity and solubility and good in environmental protection property, and the grade and the recovery rate of scheelite concentrate can be remarkably improved.

The invention discloses a cassiterite collecting agent and a preparation method and application thereof, and belongs to the technical field of mineral separation. The cassiterite collecting agent is formed by coordinating and assembling the following cinnamon hydroxamic acid ligands and metal ions with the valence of more than two: # imgabs0 #, wherein M is a monovalent cation; in the formula, R is alkoxy with 1 to 5 carbon atoms or alkyl with 1 to 5 carbon atoms. The cassiterite collecting agent has very high targeted adsorption capacity on the cassiterite surface, meanwhile has excellent hydrophobic performance, particularly can achieve selective separation of cassiterite and gangue minerals such as tourmaline and garnet and enhanced flotation recovery of fine-fraction cassiterite under the condition of very low dosage, and is low in preparation cost, good in performance, simple in process and suitable for industrial production. The method is of great significance in improving efficient comprehensive recovery of cassiterite resources and is beneficial to further popularization and application.

The invention discloses a combined inhibitor for direct flotation of medium-low-grade phosphorite and application of the combined inhibitor, and belongs to the technical field of mineral processing flotation. The combined inhibitor comprises zinc sulfate, pyridine-2, 6-dicarboxylic acid and carboxymethyl cellulose. According to the combined inhibitor, separation of medium-low-grade phosphorite and calcium-silicon gangue minerals and efficient flotation and enrichment of phosphorite can be achieved by adopting the technological process of one-time roughing, two-time refining and one-time sweeping. Through the synergistic effect of the zinc sulfate, the pyridine-2, 6-dicarboxylic acid and the carboxymethyl cellulose, the inhibition capability and the selectivity on calcium-silicon gangue are remarkably improved; all the components in the combined inhibitor are green, environment-friendly and biodegradable flotation reagents, and the reagents are simple and convenient in the preparation process and convenient to store and transport. The method has important significance on efficient flotation enrichment and resource utilization of phosphorite resources.