阅读说明：本技术 一种环保型选矿抑制剂及其制备方法和应用 (Environment-friendly beneficiation inhibitor and preparation method and application thereof ) 是由 赵玉卿 熊馨 孙晓华 朱琳 应永朋 于 2020-04-14 设计创作，主要内容包括：本发明涉及选矿技术领域,具体涉及一种环保型选矿抑制剂及其制备方法和应用。本发明提供的环保型选矿抑制剂,由以下重量份数的制备原料组成：焦亚硫酸钠120～220份,瓜尔胶10～21份,羧甲基纤维素16～35份,腐殖酸钠16～54份。本发明提供的环保型选矿抑制剂能够使铅矿得到抑制,但不会影响铜矿的浮选,进而实现铜铅分离。本发明提供的环保型选矿抑制剂无氰无铬,既能够有效解决多金属硫化矿铜铅金属分离问题,又避免了选矿药剂对环境造成危害。(The invention relates to the technical field of beneficiation, and particularly relates to an environment-friendly beneficiation inhibitor, and a preparation method and application thereof. The invention provides an environment-friendly beneficiation inhibitor, which consists of the following preparation raw materials in parts by weight: 120-220 parts of sodium metabisulfite, 10-21 parts of guar gum, 16-35 parts of carboxymethyl cellulose and 16-54 parts of sodium humate. The environment-friendly beneficiation inhibitor provided by the invention can inhibit lead ores, but cannot influence the flotation of copper ores, so that the copper-lead separation is realized. The environment-friendly beneficiation inhibitor provided by the invention is cyanide-free and chromium-free, can effectively solve the problem of copper-lead metal separation of multi-metal sulfide ores, and avoids the harm of beneficiation reagents to the environment.)

1. The environment-friendly beneficiation inhibitor comprises the following preparation raw materials in parts by weight: 120-220 parts of sodium metabisulfite, 10-21 parts of guar gum, 16-35 parts of carboxymethyl cellulose and 16-54 parts of sodium humate.

2. The environment-friendly beneficiation inhibitor according to claim 1, characterized by consisting of the following preparation raw materials in parts by weight: 140-210 parts of sodium metabisulfite, 12-14 parts of guar gum, 22-24 parts of carboxymethyl cellulose and 18-28 parts of sodium humate.

3. The preparation method of the environment-friendly beneficiation inhibitor according to claim 1 or 2, comprising the following steps:

mixing sodium pyrosulfite, guar gum, carboxymethyl cellulose and sodium humate to obtain the environment-friendly beneficiation inhibitor.

4. The application of the environment-friendly beneficiation inhibitor described in claim 1 or 2 or the environment-friendly beneficiation inhibitor prepared by the preparation method described in claim 3 in copper-lead bulk concentrate separation.

5. The application of claim 4, wherein the dosage of the environment-friendly beneficiation inhibitor is 80-160 g/t relative to the copper-lead bulk concentrate.

Technical Field

The invention relates to the technical field of beneficiation, and particularly relates to an environment-friendly beneficiation inhibitor, and a preparation method and application thereof.

Background

Copper, lead and zinc in the copper-lead-zinc multi-metal sulfide ore are closely symbiotic, and are mutually intergrown and mutually wrapped by micro-particles, particularly, the copper and lead minerals have very similar properties and are often symbiotic in a micro-particle embedded manner, and the separation difficulty is very high.

When copper-lead-zinc ore is treated domestically and abroad, copper and lead are usually floated into bulk concentrate, and then copper and lead are separated. The copper-lead separation process generally adopts two schemes of copper flotation and lead flotation and copper inhibition. The traditional separation method mainly comprises a dichromate method and a cyanide method, but the dichromate and the cyanide belong to highly toxic compounds, and can cause ecological environment pollution.

Therefore, the development of a novel efficient and environment-friendly copper-lead separation inhibitor is urgently needed.

Disclosure of Invention

The invention aims to provide an environment-friendly beneficiation inhibitor which is cyanide-free and chromium-free, can effectively solve the problem of copper-lead metal separation, and can avoid the harm of beneficiation reagents to the environment.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides an environment-friendly beneficiation inhibitor, which is prepared from the following raw materials in parts by weight: 120-220 parts of sodium metabisulfite, 10-21 parts of guar gum, 16-35 parts of carboxymethyl cellulose and 16-54 parts of sodium humate.

Preferably, the environment-friendly beneficiation inhibitor is prepared from the following raw materials in parts by weight: 140-210 parts of sodium metabisulfite, 12-14 parts of guar gum, 22-24 parts of carboxymethyl cellulose and 18-28 parts of sodium humate.

The invention provides a preparation method of an environment-friendly beneficiation inhibitor, which comprises the following steps:

mixing sodium pyrosulfite, guar gum, carboxymethyl cellulose and sodium humate to obtain the environment-friendly beneficiation inhibitor.

The invention also provides the application of the environment-friendly beneficiation inhibitor in the technical scheme or the environment-friendly beneficiation inhibitor prepared by the preparation method in the technical scheme in copper-lead bulk concentrate separation.

Preferably, the dosage of the environment-friendly beneficiation inhibitor relative to the copper-lead bulk concentrate is 80-160 g/t.

The invention provides an environment-friendly beneficiation inhibitor, which is prepared from the following raw materials in parts by weight: 120-220 parts of sodium metabisulfite, 10-21 parts of guar gum, 16-35 parts of carboxymethyl cellulose and 16-54 parts of sodium humate. In the invention, sodium pyrosulfite as a main component has the effect of cleaning the surface of minerals, so that the adverse effects of other metal ions except copper and lead can be eliminated, and the chemical agent can better generate physical and chemical effects with the surface of copper-lead bulk concentrate; the carboxymethyl cellulose and the guar gum have flocculation and filter-aid effects, can inhibit fine-grained gangue minerals easy to float in the minerals by combined use under the condition of a small using amount, can better generate electrostatic, hydrogen bond and chemical action with lead on the surface of lead ore in the process of physical and chemical reaction with the surface of copper-lead bulk concentrate, improve the effect of inhibiting the lead ore, hardly have influence on the floatability of copper, and cannot influence the flotation of copper ore; the sodium humate can be adsorbed on the surface of the lead ore to form a hydrophilic film, so that the lead ore is inhibited, the hydrophilicity of the copper ore is not influenced, and the copper-lead separation can be realized. The environment-friendly beneficiation inhibitor provided by the invention is cyanide-free and chromium-free, can effectively solve the problem of copper-lead metal separation of multi-metal sulfide ores, and avoids the harm of beneficiation reagents to the environment.

Detailed Description

The invention provides an environment-friendly beneficiation inhibitor, which is prepared from the following raw materials in parts by weight: 120-220 parts of sodium metabisulfite, 10-21 parts of guar gum, 16-35 parts of carboxymethyl cellulose and 16-54 parts of sodium humate.

In the present invention, all the starting materials for the preparation are commercially available products known to those skilled in the art unless otherwise specified.

The environment-friendly beneficiation inhibitor provided by the invention comprises 120-220 parts by mass of sodium metabisulfite, preferably 140-210 parts by mass of sodium metabisulfite, and further preferably 160-200 parts by mass of sodium metabisulfite.

The environment-friendly beneficiation inhibitor comprises 10-21 parts by mass of guar gum, and preferably 12-14 parts by mass of sodium metabisulfite.

The environment-friendly beneficiation inhibitor comprises 16-35 parts by mass of carboxymethyl cellulose, and preferably 22-24 parts by mass of sodium metabisulfite.

The environment-friendly beneficiation inhibitor comprises 16-54 parts by mass of sodium humate, preferably 18-28 parts by mass of sodium humate, and further preferably 20-24 parts by mass of sodium pyrosulfite.

The invention also provides a preparation method of the environment-friendly beneficiation inhibitor, which comprises the following steps:

mixing sodium pyrosulfite, guar gum, carboxymethyl cellulose and sodium humate to obtain the environment-friendly beneficiation inhibitor.

The raw materials in the preparation method of the invention are consistent with those in the environment-friendly beneficiation inhibitor in the technical scheme, and are not repeated herein.

The mixing method of the present invention is not particularly limited, and a mixing method known to those skilled in the art may be used.

The invention also provides the application of the environment-friendly beneficiation inhibitor in the technical scheme in the separation of copper-lead bulk concentrates, the source of the copper-lead bulk concentrates is not specially limited, the copper-lead bulk concentrates known by the technical personnel in the field can be adopted, and the copper-lead bulk concentrates are obtained by carrying out copper-lead bulk flotation on copper-lead zinc raw ores particularly preferably. In a specific embodiment of the invention, the copper content in the copper-lead bulk concentrate is 10-12%, and the lead content is 27-33%.

In the present invention, the application specifically and preferably includes: the environment-friendly beneficiation inhibitor is adopted to selectively inhibit the flotation of lead ores. In the application of the invention, the usage amount of the environment-friendly beneficiation inhibitor relative to the copper-lead bulk concentrate is preferably 80-160 g/t, and more preferably 100-140 g/t. In the application of the invention, the pH value of the system during flotation is preferably 5-9, and more preferably 6-8. The specific process for separating the copper-lead bulk concentrate is not particularly limited, and the copper-lead bulk concentrate separation process known to those skilled in the art can be adopted. In the present invention, the equipment for flotation is preferably a flotation cell. In the embodiment of the invention, the copper-lead bulk concentrate and water are preferably mixed to obtain ore pulp; and then adding the environment-friendly beneficiation inhibitor into the ore pulp for mixing, adding a copper ore collecting agent and a foaming agent, and performing flotation to obtain copper concentrate and lead concentrate. In a specific embodiment of the invention, the copper ore collector is preferably ethionamide (Z-200 #); the blowing agent is preferably methyl isobutyl carbinol (MIBC).

The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Mixing 120mg of sodium metabisulfite, 10mg of guar gum, 16mg of carboxymethyl cellulose and 16mg of sodium humate to obtain an environment-friendly beneficiation inhibitor;

adding 2kg of copper-lead bulk concentrate into a flotation tank, adding 30L of water, stirring at 2000rpm for 3min, adding the environment-friendly beneficiation inhibitor, stirring for 15min, adding 30mg/L of copper ore collecting agent ethionamide (Z-200)^#) Stirring for 2min, adding a foaming agent methyl isobutyl carbinol (MIBC) of 5mg/L, stirring for 1min, scraping copper concentrate, taking lead concentrate as tailings, controlling the pH to be 7 in the whole flotation process, drying and weighing the copper concentrate and the lead concentrate, and measuring the grades of the copper concentrate and the lead concentrate to obtain the recovery rate, wherein the recovery rate is shown in Table 1.

Example 2

Mixing 140mg of sodium metabisulfite, 14mg of guar gum, 22mg of carboxymethyl cellulose and 28mg of sodium humate to obtain an environment-friendly beneficiation inhibitor;

adding 2kg of copper-lead bulk concentrate into a flotation tank, adding 30L of water, stirring at the rotating speed of 2000rpm for 3min, adding the environment-friendly beneficiation inhibitor, stirring for 15min, adding 30mg/L of copper ore collecting agent Z-200^#Stirring for 2min, adding foaming agent MIBC 5mg/L, stirring for 1min, scraping copper concentrate with tailings as lead concentrate, controlling pH to 7, drying and weighing the copper concentrate and lead concentrate, and measuring the copper concentrate and lead concentrateThe ore grade, the recovery rate, is shown in table 1.

Example 3

Mixing 220mg of sodium metabisulfite, 12mg of guar gum, 24mg of carboxymethyl cellulose and 16mg of sodium humate to obtain an environment-friendly beneficiation inhibitor;

adding 2kg of copper-lead bulk concentrate into a flotation tank, adding 30L of water, stirring at the rotating speed of 2000rpm for 3min, adding the environment-friendly beneficiation inhibitor, stirring for 15min, adding 30mg/L of copper ore collecting agent Z-200^#Stirring for 2min, adding a foaming agent MIBC (mixed mineral carbon) 5mg/L, stirring for 1min, scraping copper concentrate, taking lead concentrate as tailings, controlling the pH to be 7 in the whole flotation process, drying and weighing the copper concentrate and the lead concentrate, and measuring the grades of the copper concentrate and the lead concentrate to obtain the recovery rate, wherein the recovery rate is shown in Table 1.

Example 4

Mixing 210mg of sodium metabisulfite, 21mg of guar gum, 35mg of carboxymethyl cellulose and 54mg of sodium humate to obtain an environment-friendly beneficiation inhibitor;

adding 2kg of copper-lead bulk concentrate into a flotation tank, adding 30L of water, stirring at the rotating speed of 2000rpm for 3min, adding the environment-friendly beneficiation inhibitor, stirring for 15min, adding 30mg/L of copper ore collecting agent Z-200^#Stirring for 2min, adding a foaming agent MIBC (mixed mineral carbon) 5mg/L, stirring for 1min, scraping copper concentrate, taking lead concentrate as tailings, controlling the pH to be 7 in the whole flotation process, drying and weighing the copper concentrate and the lead concentrate, and measuring the grades of the copper concentrate and the lead concentrate to obtain the recovery rate, wherein the recovery rate is shown in Table 1.

Table 1 examples 1-4 recovery rates of copper and lead in copper and lead concentrates

As can be seen from Table 1, the recovery rate of copper in copper concentrate and the recovery rate of lead in lead concentrate both reach over 90% by adopting the environment-friendly beneficiation inhibitor provided by the invention, and the separation of copper and lead in copper-lead bulk concentrate can be effectively realized.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.