CN101259450B - High-efficiency ore sorting technique for nickel-molybdenum mineral - Google Patents
High-efficiency ore sorting technique for nickel-molybdenum mineral Download PDFInfo
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Abstract
The invention provides a high-efficiency beneficiation technology of NiMo minerals. The technical proposal of the invention is that: a strong physical field is introduced to preprocess and decarbonize minerals, such as a thermodynamic field, an intense ultrasonic wave field or a microwave field, etc., and after adding high-efficiency activating agents to activating Ni and Mo, kerosene or xanthateis used for collection. 0.5 to 2 percent of low grade NiMo minerals are processed by the technology of the invention to obtain NiMo mixed concentrate with the NiMo grade of 5 to 8 percent and a recovery rate of more than 75 percent, which fully satisfies the requirement of metallurgical materials in a united flow of the beneficiation and metallurgy, thus providing a new way for NiMo mineral resources in China refractory black rock series.
Description
Technical field
The invention belongs to the technique of preparing field, particularly a kind of complicated difficulty is selected the efficient technique of preparing of black series of rocks nickel-molybdenum ore.
Background technology
Nickel-molybdenum ore is distributed widely in ground such as Guizhou, Hunan, Hubei.The metallogenic belt reaches 180kM, wide about 40kM, and reserves are surprising.Hunan Province nonferrous metals geology prospecting office exploration result shows: only area, Zhangjiajie, Hunan metallic nickel reserves reach about 2,000,000 tons of 3,000,000 tons, metal molybdenum reserves.This ore deposit is a kind of special multi-metal complex ore resources, contains rare precious metals such as Ni, Mo, V, W, abundant gold and silver platinum group metal and rare earth metal.Such resource component and structure are special, and nickel, molybdenum are mainly composed and be stored in the gluey sulfide of a kind of amorphous carbonaceous in the nickel-molybdenum ore, element occurrence status complexity, and the different minerals interfacial characteristics is similar to cause beneficiation enrichment, smelting to extract difficulty.
Up to now, the research at the nickel-molybdenum ore ore dressing abroad is close to blank, mention quite difficulty of black series of rocks multi-metallic minerals flotation in the only Canadian Ateba PN6026965 of the company patent, conventional means are difficult to effective processing, they utilize suspended dispersed and efficient sedimentation techniques that nickel-molybdenum ore is handled, and obtain certain effect.Our country has carried out research in a lot of years at nickel-molybdenum ore ore dressing problem, but be not formed with the effect technique scheme so far as yet, many institutes have carried out a series of researchs at nickel-molybdenum ore, conclusion shows: under the floating condition of the mill of routine, the difference of product nickel molybdenum grade is little in froth pulp and the groove, even obtain the concentrate of certain grade, the rate of recovery is very low again.After this someone adopts means such as gravity treatment preenrichment, selective flocculation that nickel-molybdenum ore is carried out preliminary treatment successively, does not all have substantial progress, reclaim product still can not become dressing and smelting united in qualified metallurgical raw material.
Summary of the invention
The objective of the invention is to remove difficulty at organic carbon in the nickel-molybdenum ore, existing technique of preparing reclaims the problem that the product taste is lower, the rate of recovery is not high, and a kind of technology that effectively removes organic carbon, efficient flotation recovery nickel-molybdenum ore is provided.
Technical scheme of the present invention mainly may further comprise the steps:
A. ore comminution to granularity is accounted for 50%～90%, is preferably and accounts for 85% for-0.074mm;
B. strong physical field preliminary treatment decarburization: add fresh water to pulp density 10%～50%, be preferably 30%, with flotation decarburization after the preliminary treatment of one of thermal field, ultrasonic wave or three kinds of strong physical fields of microwave;
C. the activation of sizing mixing: pretreated pulp density is transferred to 20%～50%, be preferably 30%, add 10～1000 gram/ton copper sulphate, 10～6000 gram/ton oxalic acid, sodium carbonate or carbonic hydroammonium earlier as activator, four kinds of activators are used singly or in combination; Add 50～2000 gram/ton vulcanized sodium again.
D. flotation collecting nickel-molybdenum ore: add 10～2000 gram/ton kerosene or 10～800 gram/ton xanthate as collecting agent, adding 10～200 gram/ton 2# oil are as foaming agent, flotation recovery nickel-molybdenum ore, and wherein kerosene or xanthate are used singly or in combination.
Clay content after ore grinds, is carried out the shaking table desliming for a long time before strong physical field preliminary treatment decarburization in ore, can omit this step after a little while.
Described thermal field preliminary treatment is meant ore pulp heated to 80～100 ℃ and boiled 10～30 minutes, leaves standstill after 5～20 minutes and extract supernatant; Preferably ore pulp is heated to 100 ℃ and boiled 20 minutes, leave standstill after 20 minutes and extract supernatant.
Described ultrasonic pretreatment is meant that it is that 20～100kHz, the sound intensity are greater than 2W/cm that ore pulp is placed frequency
2, power is to handle 5～120 minutes in the high-strength ultrasonic of 90～3000w, leave standstill after 5～20 minutes and extract supernatant; Preferably ore pulp being placed frequency is that 50kHz, the sound intensity are 10W/cm
2, power is that the intense ultrasonic wave of 400w was handled 20 minutes, leave standstill after 8 minutes and extract supernatant.
Described Microwave Pretreatment is meant that it is that the microwave of 30～5000w was handled 5～120 minutes that ore pulp is placed power; Preferably ore pulp being placed frequency is that 2450MHz, power are that the microwave of 2000w was handled 10 minutes, leaves standstill after 10 minutes and extracts supernatant.
Described flotation decarburization is meant that the calgon with 10～1000 gram/tons disperses ore pulp, after the lime of adding 100～10000 gram/tons suppresses the nickel molybdenum, with 10～1000 gram/ton kerosene flotation decarburizations; Above calgon addition is preferably 100 gram/tons, and lime adding amount is preferably 2000 gram/tons, and the kerosene addition is preferably 500 gram/tons.
When activator used separately, the copper sulphate addition was preferably 300 gram/tons, and the oxalic acid addition is preferably 800 gram/tons, and the sodium carbonate addition is preferably 1000 gram/tons, and the carbonic hydroammonium addition is preferably 800 gram/tons.
Described four kinds of activators preferably add by one of following six kinds of compound modes: oxalic acid+copper sulphate; Sodium carbonate+copper sulphate; Carbonic hydroammonium+copper sulphate; Oxalic acid+sodium carbonate+copper sulphate; Oxalic acid+carbonic hydroammonium+copper sulphate; Oxalic acid+sodium carbonate+carbonic hydroammonium+copper sulphate.
Preferred emulsification of described kerosene or sulfonated kerosene, addition are 700 gram/tons; The xanthate of preferred 3～6 carbon atoms of xanthate, addition are 280 gram/tons; 2# oil addition is preferably 60 gram/tons.
Advantage of the present invention is:
Adopt technical scheme of the present invention to handle 0.5～2% low ore grade nickel molybdenum ore, can obtain nickel molybdenum grade and be 5～8%, the rate of recovery is greater than 75% nickel molybdenum bulk concentrate, reach requirement fully as metallurgical raw material in dressing and smelting united, efficiently solve present difficulty and select organic carbon in the black series of rocks nickel-molybdenum ore to remove difficulty, problem that the nickel molybdenum recovery is not high, low taste nickel-molybdenum ore resource provides new way in China in order efficiently to utilize.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Be described further below in conjunction with embodiment, following examples are in order to set forth the present invention better, rather than are used for limiting the scope of the invention.
Embodiment 1: heat treatment decarburization flotation
Raw ore contains Ni, Mo and is respectively 0.8% and 0.5% difficulty and selects black series of rocks nickel-molybdenum ore, and comminution accounts for 85% to-0.074mm, and adding fresh water to pulp density is 30%, heats to 100 ℃ and boils 20 minutes, leave standstill 20 minutes after, extract supernatant.Ore pulp is concentrated into 30%, adds 100 gram/ton calgons as dispersion, 2000 gram/ton lime press down the nickel molybdenum, add 500 gram/ton kerosene as collecting agent, and 60 gram/ton 2# oil are as foaming agent, with pneumatic flotation cell flotation decarburization.Add listed activator of 800 gram/ton oxalic acid and 500 gram/ton vulcanized sodium as activator, emulsified kerosene and 280 gram/tons, penta xanthate flotation collecting nickel-molybdenum ore with 700 gram/tons, scan small-sized closed-circuit test through the one roughing secondary and can obtain Ni, Mo grade respectively greater than 5% and 6% nickel molybdenum bulk concentrate, Ni, the Mo rate of recovery the results are shown in Table 1 more than 75%.
Embodiment 2:
Intense ultrasonic wave preliminary treatment decarburization flotation
Raw ore contains Ni, Mo and is respectively 0.8% and 0.5% difficulty and selects black series of rocks nickel-molybdenum ore, and comminution accounts for 85% to-0.074mm, and adding fresh water to pulp density is 30%, and placing frequency 50kHz, the sound intensity is 10W/cm
2, power is to handle 20 minutes in the high-strength ultrasonic of 400w, leave standstill after 8 minutes supernatant is extracted.Ore pulp is concentrated into 30%, adds 100 gram/ton calgons as dispersion, 2000 gram/ton lime press down the nickel molybdenum, add 500 gram/ton kerosene as collecting agent, add 60 gram/ton 2# oil as foaming agent, with pneumatic flotation cell flotation decarburization.Add 800 gram/ton oxalic acid and 500 gram/ton vulcanized sodium as activator, the emulsified kerosene and 280 gram/tons, the penta xanthate flotation collecting nickel-molybdenum ore that add 700 gram/tons, scan small-sized closed-circuit test for twice through a primary election and can obtain Ni, Mo grade and be respectively 5.68% and 7.88% nickel molybdenum bulk concentrate, Ni, the Mo rate of recovery are respectively 77.53% and 76.72%.
Embodiment 3:
Microwave Pretreatment decarburization flotation
Raw ore contains Ni, Mo and is respectively 0.8% and 0.5% difficulty and selects black series of rocks nickel-molybdenum ore, comminution accounts for 85% to-0.074mm, adding fresh water to pulp density is 30%, and placing frequency is that 2450MHz, power are that the microwave of 2000w was handled 10 minutes, leaves standstill after 10 minutes and extracts supernatant.Ore pulp is concentrated into 30%, add 100 gram/ton calgons as disperse, 2000 gram/ton lime but nickel molybdenum, 500 gram/ton kerosene as collecting agent, 60 gram/ton 2# oil as foaming agent, usefulness pneumatic flotation cell flotation decarburization.Add 800 gram/ton oxalic acid and 500 gram/ton vulcanized sodium as activator, emulsified kerosene and 280 gram/tons, penta xanthate flotation collecting nickel-molybdenum ore with 700 gram/tons, scan small-sized closed-circuit test for twice through a primary election and can obtain Ni, Mo grade and be respectively 6.52% and 7.95% nickel molybdenum bulk concentrate, Ni, the Mo rate of recovery are respectively 86.47% and 88.32%.
Embodiment 4
Activator is: 500 gram/ton oxalic acid+300 gram/ton copper sulphate, other step is with embodiment 1.Test data sees Table 1.
Embodiment 5
Activator is: 800 gram/ton carbonic hydroammonium+300 gram/ton copper sulphate, other step is with embodiment 1.Test data sees Table 1.
Embodiment 6
Activator is: 500 gram/ton oxalic acid+500 gram/ton carbonic hydroammonium+300 gram/ton copper sulphate, other step is with embodiment 1.Test data sees Table 1.
Embodiment 7
Activator is: 1000 gram/ton sodium carbonate, other step is with embodiment 1.Test data sees Table 1.
The nickel-molybdenum ore test data is reclaimed in table 1 heat treatment decarburization-flotation
| Embodiment | Concentrate nickel grade (%) | Concentrate nickel recovery (%) | Concentrate molybdenum grade (%) | Concentrate molybdenum recovery (%) |
| Embodiment 1 | 5.12? | 75.23? | 7.56? | 76.12? |
| Embodiment 4 | 5.34? | 77.01? | 7.66? | 79.78? |
| Embodiment 5 | 5.68? | 75.60? | 7.51? | 76.89? |
| Embodiment 6 | 6.01? | 75.42? | 7.00? | 76.01? |
| Embodiment 7 | 5.10? | 76.87? | 6.01? | 78.32? |
Claims (11)
1. the technique of preparing of a nickel-molybdenum ore is characterized in that reclaiming nickel-molybdenum ore by following steps:
A. ore comminution to granularity is accounted for 50%～90% for-0.074mm;
B. strong physical field preliminary treatment decarburization: add fresh water to pulp density 10%～50%, with flotation decarburization after the preliminary treatment of one of thermal field, ultrasonic wave or three kinds of strong physical fields of microwave;
C. the activation of sizing mixing: pretreated pulp density is transferred to 20%～50%, add 10～1000 gram/ton copper sulphate, 10～6000 gram/ton oxalic acid, sodium carbonate or carbonic hydroammonium earlier as activator, four kinds of activators are used singly or in combination, and add 50～2000 gram/ton activator vulcanized sodium again;
D. flotation collecting nickel-molybdenum ore: add 10～2000 gram/ton kerosene or 10～800 gram/ton xanthate as collecting agent, adding 10～200 gram/ton 2# oil are as foaming agent, flotation recovery nickel-molybdenum ore, and wherein kerosene, xanthate are used singly or in combination.
2. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1 is characterized in that, after ore grinds, carries out the shaking table desliming before strong physical field preliminary treatment decarburization.
3. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1 is characterized in that, described thermal field preliminary treatment is meant ore pulp heated to 80～100 ℃ and boiled 10～30 minutes, leaves standstill after 5～20 minutes and extract supernatant.
4. the technique of preparing of a kind of nickel-molybdenum ore according to claim 3 is characterized in that, described thermal field preliminary treatment is meant ore pulp heated to 100 ℃ boiled 20 minutes, left standstill after 20 minutes and extracted supernatant.
5. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1 is characterized in that, described ultrasonic pretreatment is meant that it is that 20～100kHz, the sound intensity are greater than 2w/cm that ore pulp is placed frequency
2, power is to handle 5～120 minutes in the high-strength ultrasonic of 90～3000w, leave standstill after 5～20 minutes and extract supernatant.
6. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1 is characterized in that, described Microwave Pretreatment is meant that it is that 2450kHz, power are that the microwave of 2000w was handled 10 minutes that ore pulp is placed frequency, leaves standstill after 10 minutes and extracts supernatant.
7. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1, it is characterized in that, described flotation decarburization is meant that the calgon with 10～1000 gram/tons disperses ore pulp, after the lime of adding 100～10000 gram/tons suppresses the nickel molybdenum, with 10～1000 gram/ton kerosene flotation decarburizations.
8. the technique of preparing of a kind of nickel-molybdenum ore according to claim 7 is characterized in that, the calgon addition is 100 gram/tons in the described flotation decarbonizing process, and lime adding amount is 2000 gram/tons, and the kerosene addition is 500 gram/tons.
9. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1, it is characterized in that, when described activator uses separately, the copper sulphate addition is 300 gram/tons, the oxalic acid addition is 800 gram/tons, the sodium carbonate addition is 1000 gram/tons, and the carbonic hydroammonium addition is 800 gram/tons, and the addition of vulcanized sodium is 500 gram/tons.
10. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1 is characterized in that, described four kinds of activators add by one of following 6 kinds of compound modes: oxalic acid+copper sulphate; Sodium carbonate+copper sulphate; Carbonic hydroammonium+copper sulphate; Oxalic acid+sodium carbonate+copper sulphate; Oxalic acid+carbonic hydroammonium+copper sulphate; Oxalic acid+sodium carbonate+carbonic hydroammonium+copper sulphate.
11. the technique of preparing of a kind of nickel-molybdenum ore according to claim 1 is characterized in that, kerosene described in the d step is emulsification or sulfonated kerosene, and addition is 1200 gram/tons; Xanthate is the xanthate of 3～6 carbon atoms, and addition is 280 gram/tons; 2# oil addition is 180 gram/tons.
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| CN101693226B (en) * | 2009-10-21 | 2013-04-03 | 长沙有色冶金设计研究院有限公司 | Desliming method of high-talcose type nickel ore in mineral processing |
| CN102230075B (en) * | 2011-06-20 | 2013-04-17 | 江苏大学 | Dephosphorizing process of molybdenum nickel ore |
| CN102302981B (en) * | 2011-09-21 | 2013-06-12 | 紫金矿业集团股份有限公司 | Beneficiation reagent and method for separating copper-molybdenum mixed concentrates |
| CN102580858B (en) * | 2012-02-08 | 2014-03-12 | 中南大学 | Composite collector for recovering manganese carbonate from carbonaceous rhodochrosite and flotation method for composite collector |
| CN104209183B (en) * | 2014-08-30 | 2016-09-21 | 广东省工业技术研究院(广州有色金属研究院) | A kind of beneficiation method of wulfenite |
| CN105413880B (en) * | 2015-12-22 | 2018-05-11 | 中国地质科学院矿产综合利用研究所 | Beneficiation method for producing low-phosphorus molybdenum concentrate by utilizing ultrasonic waves |
| CN107694744B (en) * | 2017-09-27 | 2019-09-27 | 昆明理工大学 | A kind of flotation combined desliming process of ultrasonic wave-shaking table- |
| CN108530092A (en) * | 2018-06-06 | 2018-09-14 | 湖南化工职业技术学院（湖南工业高级技工学校） | A kind of method that bauxite gangue prepares low iron refractory brick base-material coproduction nano-sized iron oxide |
| CN108927279B (en) * | 2018-08-23 | 2020-12-18 | 江西铜业集团有限公司 | Efficient settling method of micro-fine particle rare earth flotation tailings based on modified iron-making slag |
| CN110184457B (en) * | 2019-05-31 | 2021-01-29 | 江西理工大学 | Molybdenum concentrate decarbonizer and process for reducing carbon content of molybdenum concentrate |
| CN110586333A (en) * | 2019-09-17 | 2019-12-20 | 南华大学 | Nickel-molybdenum ore collecting agent and preparation method and application thereof |
| CN110527847B (en) * | 2019-09-17 | 2021-12-24 | 南华大学 | Method for obtaining nickel-molybdenum-iron alloy from nickel-molybdenum ore |
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