阅读说明：本技术 一种由镍钼矿得到镍钼铁合金的方法 (A method of dynamax is obtained by nickel-molybdenum ore ) 是由 刘建东 刘永 史文革 李向阳 刘三军 于 2019-09-17 设计创作，主要内容包括：本发明属于选矿-合金冶炼联合技术领域,具体涉及一种由镍钼矿得到镍钼铁合金的方法。本发明提供了一种由镍钼矿得到镍钼铁合金的方法,包括如下步骤：将镍钼矿进行浮选,得到镍钼精矿；将所述镍钼精矿氧化焙烧,得到镍钼矿烧结矿；将所述镍钼矿烧结矿与铁熔炼,得到镍钼铁合金。本发明对镍钼矿进行浮选富集,降低后续冶炼处理量；通过氧化焙烧,使镍和钼完全转化为氧化镍和氧化钼；在熔炼过程中,以镍钼矿烧结矿中不易脱除的碳为还原剂,消耗降低了熔炼体系中有机碳含量。实验结果表明,采用本发明提供的方法,可以由1～2％的低品位镍钼矿得到钼品位达18～21％、镍品位达8～11％、铁品位达50～60％的镍钼铁合金。(The invention belongs to ore dressing-alloy smelting United Technologies fields, and in particular to a method of dynamax is obtained by nickel-molybdenum ore.The present invention provides a kind of method for obtaining dynamax by nickel-molybdenum ore, includes the following steps: nickel-molybdenum ore carrying out flotation, obtain nickel molybdenum concentrate；By the nickel molybdenum concentrate oxidizing roasting, nickel-molybdenum ore sinter is obtained；By the nickel-molybdenum ore sinter and iron melting, dynamax is obtained.The present invention carries out floating and enriching to nickel-molybdenum ore, reduces subsequent smelting treating capacity；By oxidizing roasting, nickel and molybdenum is made to be fully converted to nickel oxide and molybdenum oxide；In fusion process, to be not easy the carbon removed in nickel-molybdenum ore sinter as reducing agent, consumption reduces organic carbon content in melting system.The experimental results showed that using method provided by the invention, dynamax of the molybdenum grade up to 18~21%, nickel grade up to 8~11%, Iron grade up to 50~60% can be obtained by 1~2% low ore grade nickel molybdenum ore.)

1. a kind of method for obtaining dynamax by nickel-molybdenum ore, which comprises the steps of:

Nickel-molybdenum ore is subjected to flotation, obtains nickel molybdenum concentrate；

By the nickel molybdenum concentrate oxidizing roasting, nickel-molybdenum ore sinter is obtained；

By the nickel-molybdenum ore sinter and iron melting, dynamax is obtained.

2. the method according to claim 1, wherein the nickel-molybdenum ore is provided in the form of nickel-molybdenum ore ore pulp；Institute The mass concentration for stating nickel-molybdenum ore ore pulp is 30~35%.

3. the method according to claim 1, wherein further including being added into the nickel-molybdenum ore before the flotation Dispersing agent；The dispersing agent is calgon；The calgon is 80~100g/t relative to the additional amount of nickel-molybdenum ore.

4. the method according to claim 1, wherein the flotation is diesel oil or butyl xanthate with collecting agent.

5. according to the method described in claim 4, it is characterized in that, in terms of the quality of the nickel-molybdenum ore ore pulp obtained by the nickel-molybdenum ore, The quality of the diesel oil is 800~1200g/t, and the quality of the butyl xanthate is 80~120g/t.

6. the method according to claim 1, wherein the temperature of the oxidizing roasting be 550~650 DEG C, the time For 25~35min.

7. method according to claim 1 or 6, which is characterized in that before the oxidizing roasting, further include by nickel molybdenum concentrate according to It is secondary to carry out dehydration and agglomeration；The nickel molybdenum concentrate moisture content obtained after the dehydration is less than or equal to 5wt.%；What the agglomeration obtained Nickel molybdenum concentrate form is honeycomb coaly.

8. the method according to claim 1, wherein the iron phase is for the additional amount of nickel-molybdenum ore sinter 100~120kg/t.

9. method according to claim 1 or 8, which is characterized in that the temperature of the melting is 1800~2000 DEG C, the time For 40~70min.

10. method according to claim 1 or 8, which is characterized in that the mode of the melting is electric furnace reduction melting；Institute The power for stating melting electric furnace is 500~515kW.

Technical field

The invention belongs to ore dressing-alloy smelting United Technologies fields, and in particular to a kind of to obtain nickel-molybdenum iron conjunction by nickel-molybdenum ore The method of gold.

Background technique

Nickel molybdenum becomes matrix, main component or the addition of advanced configuration material and functional material as grand strategy metal Object is widely used in the fields such as national economy and defence and military.

The ground such as China Xiangxi Region, zunyi, guizhou, Hubei Duchang, Fuyang, Zhejiang and Zhanyi, Yunnan have found rich in Ni, Mo, The mine belt of a variety of valuable elements such as As, Au, Ag, Se, Re, Pt and Pd, people's mine belt are referred to as " more metal black shales ", due to It is rich in metallic elements such as nickel, molybdenums, so commonly referred to as nickel-molybdenum ore.For nickel-molybdenum ore as a kind of primary ore, nickel and molybdenum grade are high The value that defines that nickel grade is 0.3% in non-nickel-molybdenum ore mine and molybdenum grade is 0.1%, but molybdenum is mainly with amorphous in nickel-molybdenum ore The jordisite set volume morphing of state exists, and nickel element is then primarily present among the nickel minerals such as curing nickel, amoibite, nickel With the complicated occurrence state of molybdenum；The changes of contents amplitude of molybdenum and sulphur is larger；Mineral multiplicity and impurity content height, so that ore dressing difficulty Greatly, mineral decomposition difficulty is big, impurity separating difficulty is big.Special in view of nickel-molybdenum ore ingredient and structure, Forms of Existence of Elements is complicated, no It is similar with mineral interfacial characteristics to lead to beneficiation enrichment, smelt and extract difficulty, this kind of mineral are usually positioned as " low ore grade nickel molybdenum Hardly possible separation complicated ore ".

For having the nickel-molybdenum ore of difficult separation, difficult smelting characteristic, if directly being smelted with nickel-molybdenum ore, the product of nickel and molybdenum Smelting requirements are all not achieved in position, and the technique that tradition is directly smelted is difficult to carry out metallurgy and obtain the higher nickel molybdenum of grade to close Gold.In addition, smelting for nickel-molybdenum ore, there are also desulfurization with roasting technique-Oxidation Leaching technique and concentrated acid curing leaching-ammonium hydroxide solution are poly- at present Solvent extraction technology: desulfurization with roasting technique-Oxidation Leaching technique is that ore is added after desulfurization with roasting technique to alkali under the conditions of 600 DEG C and is passed through oxygen Gas (ozone) carries out Oxidation Leaching, needs ozone preparation link in the method, ozone chemistry property is unstable, is easy quick-fried Fried, there are larger security risks, and the leaching rate of molybdenum is low, and nickel molybdenum grade is lower.The poly- solvent extraction of concentrated acid curing leaching-ammonium hydroxide solution Taking technique requires height to processing equipment, leaches a lot of other elementary metal impurities in maturing process, is unfavorable for compared with high-grade nickel molybdenum Obtain, further increase removal of impurities difficulty and reagent consumption；And the above method can not effectively remove the organic carbon in nickel-molybdenum ore.

Efficiently, industrialization ground, which extracts nickel molybdenum from nickel-molybdenum ore and obtains nickel-molybdenum alloy, is conducive to its people to nickel Mo resource It makes full use of.

Summary of the invention

In view of this, the purpose of the present invention is to provide a kind of method for obtaining dynamax by nickel-molybdenum ore, Ke Yiyou Organic carbon in effect removal nickel-molybdenum ore, improves nickel molybdenum grade, and process safety, simple and easy, is suitable for industrial applications.

In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:

The present invention provides a kind of methods for obtaining dynamax by nickel-molybdenum ore, include the following steps:

Nickel-molybdenum ore is subjected to flotation, obtains nickel molybdenum concentrate；

By the nickel molybdenum concentrate oxidizing roasting, nickel-molybdenum ore sinter is obtained；

By the nickel-molybdenum ore sinter and iron melting, dynamax is obtained.

Preferably, the nickel-molybdenum ore is provided in the form of nickel-molybdenum ore ore pulp；The mass concentration of the nickel-molybdenum ore ore pulp is 30 ~35%.

It preferably, further include that dispersing agent is added into the nickel-molybdenum ore before the flotation；The dispersing agent is hexa metaphosphoric acid Sodium；The calgon is 80~100g/t relative to the additional amount of nickel-molybdenum ore.

Preferably, the flotation is diesel oil or butyl xanthate with collecting agent.

Preferably, in terms of the quality of the nickel-molybdenum ore gained nickel-molybdenum ore ore pulp, the quality of the diesel oil is 800~1200g/ T, the quality of the butyl xanthate are 80~120g/t.

Preferably, the temperature of the oxidizing roasting is 550~650 DEG C, and the time is 25~35min.

It preferably, further include that nickel molybdenum concentrate is successively carried out to dehydration and agglomeration before the oxidizing roasting；After the dehydration The nickel molybdenum concentrate moisture content arrived is less than or equal to 5wt.%；The nickel molybdenum concentrate form that the agglomeration obtains is honeycomb coaly.

Preferably, the iron phase is 100~120kg/t for the additional amount of nickel-molybdenum ore sinter.

Preferably, the temperature of the melting is 1800~2000 DEG C, and the time is 40~70min.

Preferably, the mode of the melting is electric furnace reduction melting；The power of the melting electric furnace is 500~515kW.

The present invention provides a kind of method for obtaining dynamax by nickel-molybdenum ore, include the following steps: by nickel-molybdenum ore into Row flotation obtains nickel molybdenum concentrate；By the nickel molybdenum concentrate oxidizing roasting, nickel-molybdenum ore sinter is obtained；The nickel-molybdenum ore is sintered Mine and iron melting, obtain dynamax.The present invention carries out the enrichment of nickel molybdenum, a large amount of tails of dishing out by carrying out flotation to nickel-molybdenum ore Mine reduces subsequent smelting treating capacity；By oxidizing roasting, nickel and molybdenum in nickel molybdenum concentrate is made to be fully converted to nickel oxide and oxidation Molybdenum；In fusion process, the present invention makes full use of and consumes in nickel-molybdenum ore using the carbon contained in nickel-molybdenum ore sinter as reducing agent It is not easy the carbon removed, reduces organic carbon content in melting system；By the way that iron is added, increases the mobility of melting system, be conducive to The impurity that melting system is removed in fusion process, improves nickel molybdenum grade.

The experimental results showed that using method provided by the invention nickel molybdenum can be obtained by 1~2% low ore grade nickel molybdenum ore Grade is nickel molybdenum concentrate of 5~7%, the nickel molybdenum recovery up to 80~85%, and then obtains the nickel-molybdenum ore that nickel molybdenum grade is 9~12% Sinter, and the smelting nickel for finally obtaining molybdenum grade up to 18~21%, nickel grade up to 8~11%, Iron grade up to 50~60% Ferro-molybdenum.

Detailed description of the invention

Fig. 1 is process flow chart of the invention.

Specific embodiment

The present invention provides a kind of methods for obtaining dynamax by nickel-molybdenum ore, comprising the following steps:

Nickel-molybdenum ore is subjected to flotation, obtains nickel molybdenum concentrate；

By the nickel molybdenum concentrate oxidizing roasting, nickel-molybdenum ore sinter is obtained；

By the nickel-molybdenum ore sinter and iron melting, dynamax is obtained.

In the present invention, if without specified otherwise, the component is commercial goods well known to those skilled in the art.

Nickel-molybdenum ore is carried out flotation by the present invention, obtains nickel molybdenum concentrate.

The present invention is not particularly limited the source of the nickel-molybdenum ore, using nickel-molybdenum ore well known to those skilled in the art come Source.In the present invention, in the nickel-molybdenum ore grade of nickel and molybdenum independently be preferably 1~2%, more preferably 1.1~ 1.9%, it is further preferably 1.1~1.8%.

In the present invention, the nickel-molybdenum ore provides preferably in the form of nickel-molybdenum ore ore pulp；The quality of the nickel-molybdenum ore ore pulp Concentration is preferably 30~35%, and more preferably 31~34%.In the present invention, the granularity of nickel-molybdenum ore is small in the nickel-molybdenum ore ore pulp The 86~90% of nickel-molybdenum ore gross mass is preferably accounted in the ore equal to 0.074mm.

Before the flotation, it is also preferable to include dispersing agent is added into the nickel-molybdenum ore by the present invention.In the present invention, described point Powder is preferably calgon.In the present invention, the calgon relative to the additional amount of nickel-molybdenum ore be preferably 80~ 100g/t, more preferably 85~95g/t.

In the present invention, the flotation is preferably diesel oil or butyl xanthate with collecting agent.In the present invention, obtained by nickel-molybdenum ore The quality meter of nickel-molybdenum ore ore pulp, the quality of the diesel oil are preferably 800~1200g/t, more preferably 850~1150g/t, then excellent It is selected as 900~1100g/t；The quality of the butyl xanthate is preferably 80~120g/t, more preferably 85~115g/t, further preferably for 90~110g/t.In the present invention, the flotation is preferably terpenic oil with foaming agent.In the present invention, with nickel obtained by nickel-molybdenum ore The quality meter of molybdenum ore ore pulp, the quality of the terpenic oil are preferably 25g/t.The present invention does not have special limit to the technique of the flotation It is fixed, using floatation process well known to those skilled in the art.

After obtaining nickel molybdenum concentrate, the nickel molybdenum concentrate oxidizing roasting is obtained nickel-molybdenum ore sinter by the present invention.

In the present invention, the temperature of the oxidizing roasting is preferably 550~650 DEG C, and more preferably 560~640 DEG C, then it is excellent It is selected as 570~630 DEG C；Time is preferably 25~35min, more preferably 27~33min, is further preferably 28~31min.In this hair In bright, the oxidizing roasting is preferably ladder calcining kiln with equipment.

Before the oxidizing roasting, it is also preferable to include be successively dehydrated the nickel molybdenum concentrate and agglomeration by the present invention.In In the present invention, the nickel molybdenum concentrate moisture content obtained after the dehydration is preferably smaller than equal to 5wt.%.In the present invention, the dehydration Mode preferably compress dehydration；The equipment of the dehydration is preferably filter press.In the present invention, the nickel molybdenum that the agglomeration obtains Concentrate form is preferably honeycomb coaly.The present invention increases oxidizing roasting surface by the way that nickel molybdenum concentrate agglomeration is formed honeycomb coaly Product, and then be conducive to the abundant progress of oxidizing roasting, keep molybdenum sulfide more abundant to the conversion of molybdenum oxide.The present invention makes to described The technique of block is not particularly limited, using agglomeration process well known to those skilled in the art.

In addition, the present invention can generate flue gas during the oxidizing roasting, contain SO in the flue gas₂.The present invention is excellent The flue gas is dusted after processing to the SO in flue gas by choosing₂It is recycled；The recovery processing is preferably by the SO₂ Preparation for sulfuric acid.The present invention reduces flue gas to the adverse effect of environment by the recovery processing to the flue gas.

After obtaining nickel-molybdenum ore sinter, the nickel-molybdenum ore sinter and iron melting are obtained dynamax by the present invention.

In the present invention, the iron phase is preferably 100~120kg/t for the additional amount of nickel-molybdenum ore sinter, more preferably It is further preferably 108~112kg/t for 105~115kg/t.The present invention increases melting system liquidity, avoids by the way that iron is added It is not easy to flow caused by melting system viscosity is excessive, and then improves melting production capacity, while being conducive in fusion process Except the impurity of melting system, nickel molybdenum grade is improved.In the present invention, the temperature of the melting is preferably 1800~2000 DEG C, more Preferably 1850~1950 DEG C, be further preferably 1900~1950 DEG C；Time is preferably 40~70min, more preferably 45~ 65min is further preferably 50~60min.In the present invention, the mode of the melting is preferably electric furnace reduction melting.In melting Cheng Zhong, the present invention are made full use of and are consumed and be not easy to remove in nickel-molybdenum ore using the carbon contained in nickel-molybdenum ore sinter as reducing agent Carbon reduces organic carbon content in melting system.In the present invention, the power of melting electric furnace is preferably 500~515kW, More preferably 505~512kW.

Fig. 1 is the flow chart of the method provided by the invention that dynamax is obtained by nickel-molybdenum ore, by 1~2% low product It is 5~7%, nickel molybdenum recovery up to 80~85% nickel molybdenum concentrate that position nickel-molybdenum ore, which obtains nickel molybdenum grade through flotation, is obtained through agglomeration Honeycomb coaly nickel molybdenum concentrate obtains the nickel-molybdenum ore sinter that nickel molybdenum grade is 9~12% after oxidizing roasting, and smelting final Dynamax to molybdenum grade up to 18~21%, nickel grade up to 8~11%, Iron grade up to 50~60%.

In order to further illustrate the present invention, nickel-molybdenum iron conjunction is obtained by nickel-molybdenum ore to provided by the invention below with reference to embodiment The method of gold is described in detail, but they cannot be interpreted as limiting the scope of the present invention.Obviously, described Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field Those of ordinary skill's every other embodiment obtained without making creative work, belongs to protection of the present invention Range.