CN103834804A - Method for preparing nickel-containing solid particle briquette - Google Patents
Method for preparing nickel-containing solid particle briquette Download PDFInfo
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- CN103834804A CN103834804A CN201410096573.9A CN201410096573A CN103834804A CN 103834804 A CN103834804 A CN 103834804A CN 201410096573 A CN201410096573 A CN 201410096573A CN 103834804 A CN103834804 A CN 103834804A
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- solid particulate
- briquetting
- nickeliferous solid
- syrup
- nickeliferous
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- 239000007787 solid Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 73
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 29
- 239000002245 particle Substances 0.000 title claims abstract description 29
- 239000004484 Briquette Substances 0.000 title abstract 5
- 239000006188 syrup Substances 0.000 claims abstract description 40
- 235000020357 syrup Nutrition 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000003723 Smelting Methods 0.000 claims abstract description 18
- 229910000863 Ferronickel Inorganic materials 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims description 50
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 32
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 32
- 239000004571 lime Substances 0.000 claims description 32
- 239000012208 gear oil Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 21
- 239000002699 waste material Substances 0.000 claims description 21
- 239000002689 soil Substances 0.000 claims description 16
- 238000010891 electric arc Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 6
- 238000007885 magnetic separation Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 5
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract description 16
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 abstract 1
- 235000012255 calcium oxide Nutrition 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 238000005054 agglomeration Methods 0.000 description 29
- 230000002776 aggregation Effects 0.000 description 29
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 13
- 239000000463 material Substances 0.000 description 11
- 235000019353 potassium silicate Nutrition 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 9
- 238000000576 coating method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- -1 wherein Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a method for preparing a nickel-containing solid particle briquette. The method comprises steps of (1) providing nickel-containing solid particles with average particle size below 75 micron; (2) wrapping the nickel-containing solid particles with organic coating agent; (3) mixing the wrapped nickel-containing solid particles obtained in step (2) with adhesive, wherein the adhesive contains syrup and at least one of hydrated lime and quick lime; (4) briquetting the mixture obtained in step (3), so as to obtain the nickel-containing solid particle briquette. The method can remarkably lower the cost for preparing the nickel-containing solid particle briquette, the prepared nickel-containing solid particle briquette can be used for smelting without drying, so that the industrial production technology for producing ferro-nickel alloy saves one step, and the production cost is remarkably lowered.
Description
Technical field
The invention belongs to chemical field, particularly, the present invention relates to prepare the method for nickeliferous solid particulate briquetting.
Background technology
The novel method that red soil nickel ore is processed now adopts rotary hearth furnace to replace traditional rotary kiln to complete the reduction of ferronickel mineral more.Owing to being static siege, can avoid the such high temperature of rotary kiln " ring formation " phenomenon.Reduction temperature is relatively high, and jettisoning tailings after the choosing of the direct-reduction product that obtains mill obtains granularity and account for lower than 200 orders (75 microns) the high-grade nickel iron powdered product of 90% left and right.Conventionally this high-grade nickel iron powdered product is melted in electric arc furnace to a point smelting, electric arc furnace is only applicable to the smelting of lumpy material, therefore, ferronickel powdered product need to be carried out to agglomeration.
Metallic reducing product for above-mentioned granularity below 200 orders, existing agglomeration method adopts the aqueous binders of water glass one class conventionally, after fully mixing, pressurizes with hydraulic press in mould with processed material particles, and the demoulding, obtains briquetting.Because the granularity of handled ferronickel powdered product is thinner, conventionally account for more than 90% lower than 200 object particles, therefore specific surface is larger, so adopt water glass one class as binding agent, consumption is very large, relative cost is higher.And adopt the aqueous binders of water glass one class, maximum shortcoming is: after briquetting, need to dry, not only increased oven dry cost, and also may cause the secondary oxidation of metal at drying course, dry atmosphere needs to control simultaneously, and facility investment is also very large.
Therefore, need further improvement about the method for the ferronickel powdered product obtaining after red soil nickel ore reduction grinding being carried out to agglomeration.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, one object of the present invention is to propose a kind of method of preparing nickeliferous solid particulate briquetting.
For this reason, in one aspect of the invention, the present invention proposes a kind of method of preparing nickeliferous solid particulate briquetting, the method comprises:
(1) provide nickeliferous solid particulate, the mean particle size of described nickeliferous solid particulate is below 75 microns;
(2) utilize organic coating agent, described nickeliferous solid particulate is coated to processing;
(3) coated the process obtaining in step (2) the nickeliferous solid particulate of processing is mixed with binding agent, wherein, described binding agent contains syrup and white lime; And
(4) mixture obtaining in step (3) is carried out to briquetting processing, to obtain nickeliferous solid particulate briquetting.
Utilize the method effectively nickeliferous solid particulate to be carried out to agglomeration, and the method is particularly useful for the agglomeration of the thinner nickeliferous solid particulate of granularity, for example, the agglomeration of the nickeliferous solid particulate of mean particle size below 75 microns.The method adopts syrup and white lime as binding agent, adopts the aqueous binders such as a large amount of water glass to save great amount of cost with respect to traditional method.And the nickeliferous solid particulate briquetting water content of utilizing the method to prepare is low, without carrying out drying and processing, has not only saved thus drying plant and energy consumption, can also significantly avoids drying and cause metal secondary oxidation simultaneously.
In addition, the method for the nickeliferous solid particulate briquetting of preparation according to the above embodiment of the present invention can also have following additional technical characterictic:
In some embodiments of the invention, in described nickeliferous solid particulate, 90% grain graininess is below 75 microns.Because the granularity of this nickeliferous solid particulate is thinner, specific surface area is larger, therefore adopts the traditional method of water glass as binding agent agglomeration of utilizing, the large usage quantity of binding agent, and relative cost is higher.
In some embodiments of the invention, described nickeliferous solid particulate obtains through the following steps: in rotary hearth furnace, red soil nickel ore is carried out to direct-reduction, to obtain ferronickel reduzate; And described ferronickel reduzate is carried out to ball milling and magnetic separation, to obtain described nickeliferous solid particulate.The mean particle size of the nickeliferous solid particulate obtaining is thus below 75 microns, adopts the large usage quantity of traditional agglomeration method water glass of binder, causes cost higher.
In some embodiments of the invention, it is liquid hydrocarbons that described organic coating agent comprises under normal temperature, and for example comprising under normal temperature is liquid alkane.Can effectively be coated nickeliferous solid particulate thus.
In some embodiments of the invention, described organic coating agent is lubricating oil, and for example gear oil, such as waste and old gear oil.Can further save thus agglomeration cost.
In some embodiments of the invention, the syrup waste liquid that described syrup is sugar industry.Can further save thus agglomeration cost.
In some embodiments of the invention, based on the described nickeliferous solid particulate of 100 weight parts, the consumption of described organic coating agent is 0.3 weight part, and the consumption of described syrup is 6 weight parts, and the consumption of described white lime is 3.6 weight parts.Utilize thus a small amount of coating and binding agent effectively to carry out agglomeration to nickeliferous solid particulate, significantly reduce agglomeration cost.
In a second aspect of the present invention, the present invention proposes a kind of method of preparing Rhometal, the method comprises: by foregoing method, prepare nickeliferous solid particulate briquetting; And in electric arc furnace, described nickeliferous solid particulate briquetting is melted to a point smelting, to obtain Rhometal.The nickeliferous solid particulate briquetting preparing by foregoing method thus melts a point smelting can reduce the step that nickeliferous solid particulate briquetting is dried in advance, can further save thus the cost of preparing nickel-containing alloys.
In some embodiments of the invention, the above-mentioned method of preparing Rhometal also comprises: red soil nickel ore is carried out to fragmentation, and with rotary hearth furnace to carrying out direct-reduction through broken red soil nickel ore, to obtain spongy ferronickel reduzate; Described spongy ferronickel reduzate is carried out to ball milling and magnetic separation, obtain mill and select product; In paddle agitator, select product to mix with described mill gear oil and stir 90 minutes, wherein, selecting product, the consumption of described gear oil based on mill described in 100 weight parts is 0.3 weight part; In described paddle agitator, add white lime and be dry mixed 3 minutes, wherein, selecting product, the consumption of described white lime based on mill described in 100 weight parts is 3.6 weight parts; In described paddle agitator, add syrup and carry out batch mixing 3 minutes, wherein, selecting product, the consumption of described syrup based on mill described in 100 weight parts is 6.0 weight parts; In hydraulic pressure briquetting press, at 3.15t/cm
2pressure under, the mixture obtaining in described paddle agitator is carried out to briquetting, to obtain nickeliferous solid particulate briquetting; Described nickeliferous solid particulate briquetting is joined in electric arc furnace and melts a point smelting, to obtain Rhometal.
Utilize thus the method for preparing nickel-containing alloys of the above embodiment of the present invention significantly to reduce production costs, especially the more traditional employing water glass of method that nickeliferous solid particulate is carried out to agglomeration in above-described embodiment is significantly saved agglomeration cost as binding agent agglomeration method.And utilize the nickeliferous solid particulate briquetting water content that in above-described embodiment, agglomeration method prepares lower, before melting point smelting, without carrying out drying and processing, reduced thus the cost of preparing Rhometal.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the process flow sheet of the method for the nickeliferous solid particulate briquetting of preparation according to an embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In one aspect of the invention, the present invention proposes a kind of method of preparing nickeliferous solid particulate briquetting, the method comprises:
(1) provide nickeliferous solid particulate, the mean particle size of nickeliferous solid particulate is below 75 microns;
(2) utilize organic coating agent, nickeliferous solid particulate is coated to processing;
(3) coated the process obtaining in step (2) the nickeliferous solid particulate of processing is mixed with binding agent, wherein, binding agent contains syrup and white lime; And
(4) mixture obtaining in step (3) is carried out to briquetting processing, to obtain nickeliferous solid particulate briquetting.
Utilize the method effectively nickeliferous solid particulate to be carried out to agglomeration, and the method is particularly useful for the agglomeration of the thinner nickeliferous solid particulate of granularity, for example, the agglomeration of the nickeliferous solid particulate of mean particle size below 75 microns.The method adopts syrup and white lime as binding agent, adopts the aqueous binders such as a large amount of water glass to save great amount of cost with respect to traditional method.And the nickeliferous solid particulate briquetting water content of utilizing the method to prepare is low, without carrying out drying and processing, has not only saved thus drying plant and energy consumption, can also significantly avoids drying and cause metal secondary oxidation simultaneously.
Describe the method for the nickeliferous solid particulate briquetting of preparation according to a particular embodiment of the invention in detail below with reference to accompanying drawing.
S100: nickeliferous solid particulate is provided
First, provide nickeliferous solid particulate, according to a particular embodiment of the invention, the mean particle size of nickeliferous solid particulate is below 75 microns.According to another specific embodiment of the present invention, in nickeliferous solid particulate, 90% grain graininess is below 75 microns.The granularity of this nickeliferous solid particulate is less thus, therefore the large usage quantity of binding agent used.Especially adopt the aqueous binders large usage quantities such as traditional water glass, cost is higher.And adopt aqueous binders to introduce large quantity of moisture, make the water content of the block product preparing larger, need drying and processing, again increase the investment of drying energy consumption and drying plant, and drying and processing also may cause metal wherein by secondary oxidation.Therefore, it is 75 microns of following nickeliferous solid particulates that traditional agglomeration method is also no longer applicable to above-mentioned mean particle size, is also unsuitable for the development strategy that social energy conservation reduces discharging now.
According to a particular embodiment of the invention, the reduzate that above-mentioned nickeliferous solid particulate can be red soil nickel ore.Particularly, can obtain through the following steps: in rotary hearth furnace, red soil nickel ore is carried out to direct-reduction, to obtain ferronickel reduzate; And ferronickel reduzate is carried out to ball milling and magnetic separation, to obtain nickeliferous solid particulate.The mean particle size of the nickeliferous particle obtaining is thus below 75 microns.
S200: coated processing
Further comprise according to the method for the nickeliferous solid particulate briquetting of the preparation of the embodiment of the present invention: utilize organic coating agent, the above-mentioned nickeliferous solid particulate providing is coated to processing.According to a particular embodiment of the invention, the type of organic coating agent and composition be not particularly limited.According to concrete example of the present invention, it is liquid hydrocarbons that the organic coating agent that aforesaid method adopts can comprise under normal temperature, and for example comprising under normal temperature is liquid alkane.
According to concrete example of the present invention, organic coating agent can be lubricating oil, and for example gear oil, such as waste and old gear oil.Utilize thus and further reduce preparation cost." the waste and old gear oil " described in the embodiment of the present invention is the waste and old gear oil that engine, compressor etc. change.Utilize above-mentioned organic coating agent first nickel and cobalt containing solid particulate to be coated to processing, can make the surface of nickeliferous solid particulate form organic coating film.
According to a particular embodiment of the invention, organic coating film is one of reactant simultaneously, there is violent thermopositive reaction with the syrup waste liquid adding subsequently and white lime, and then bond at particle coating layer, exothermic heat of reaction has been accelerated the curing proceeding of Binder Phase, has realized the self-hardening effect of " exempting to dry ".Quality and the efficiency of compound stalk forming can be further improved thus.
S300: sneak into binding agent
According to a particular embodiment of the invention, further coated the process obtaining in the above-mentioned coated treatment step nickeliferous solid particulate of processing is mixed with binding agent, wherein, binding agent contains syrup and white lime.Utilizing thus above-mentioned binding agent can be that 75 microns of following nickeliferous solid particulates are prepared into lumpy material effectively by mean particle size.
According to a particular embodiment of the invention, above-mentioned syrup can be the syrup waste liquid of sugar industry.Utilize thus syrup waste liquid to use as part binding agent, refuse can be recycled and reduce agglomeration cost simultaneously.
More importantly contriver finds by great many of experiments aqueous binders such as can substituting traditional water glass, is surprised to find that, syrup and white lime are combined as binding agent use, can be effectively applied in the agglomeration of the nickeliferous solid particulate that granularity is less.In binding agent, white lime main component is Ca (OH)
2.These two kinds of binding agents and the gear oil combination that is coated on nickeliferous solid particles surface, have very large viscosity.And contriver's discovery, utilizes white lime to make material very exothermic in batch mixing and briquetting process subsequently as binding agent, and material temperature can reach 70～90 degrees Celsius, can make thus the large quantity of moisture wherein containing evaporate.After briquetting, above-mentioned thermopositive reaction meeting further continues, and speed of response reduces gradually, until reaction termination.
Thermopositive reaction has not only consumed the moisture containing in mixture, has greatly promoted the cohesive action of binding agent simultaneously, has accelerated binding agent onset, a large amount of finer nickeliferous solid particulates can be bonded together thus, is convenient to thus follow-up compression moulding.Thermopositive reaction simultaneously can promote the cohesive action of binding agent, and then can utilize the binding agent of small amount can reach the bond effect that adopts a large amount of aqueous binders in traditional agglomeration method, and then significantly reduces costs.Binding agent onset has been accelerated in thermopositive reaction, can significantly improve thus production efficiency.
Can significantly reduce the moisture in the nickeliferous solid particulate briquetting preparing by the thermopositive reaction that adopts syrup and white lime to occur as binding agent in addition, therefore without again it being dried, can directly enter electric furnace and melt a point smelting.Can save thus the cost of energy of baking needed, and the investment of having saved huge drying plant.Therefore the method that the above embodiment of the present invention is prepared nickeliferous solid particulate briquetting is by adopting organic coating agent and syrup and white lime as binding agent, the small nickeliferous solid particulate that contrast table area is larger effectively carries out agglomeration, and significantly reduce the cost of preparing binding agent, saved the follow-up baking operation of briquetting.
According to a particular embodiment of the invention, the consumption of above-mentioned coating and binding agent being not particularly limited.According to concrete example of the present invention, can be according to the nickeliferous solid particulate based on 100 weight parts, the consumption of organic coating agent is 0.3 weight part, and the consumption of syrup is 6 weight parts, and the consumption of white lime is 3.6 weight parts.Mix according to said ratio thus, can utilize less consumption to bring into play to greatest extent the effect of coating and binding agent, saved preparation cost.Although the amount of three kinds of reactants is not particularly limited, the proportioning of above-described embodiment that the present invention provides is relatively excellent, and when syrup waste liquid exceeds 6% when more, binding agent gross surplus, therefore to compound stalk forming poor effect.
Coating in the above embodiment of the present invention and the consumption of binding agent are saved consumption more with respect to traditional agglomeration method.And coating and binding agent can adopt respectively waste and old gear oil and syrup waste liquid, not only provide thus refuse to process and can also significantly reduce preparation cost.
Therefore, gear oil, syrup and white lime are combined to use, there is complex reaction in syrup and white lime wherein, simultaneously gear oil contacts the complexing action of having emitted a large amount of heats and further promoted syrup and white lime with the two, and then make the easy moulding of briquetting, improve the quality of briquetting efficiency and briquetting.
S400: briquetting processing
According to a particular embodiment of the invention, finally the mixture obtaining in above-mentioned steps is carried out to briquetting processing, to obtain nickeliferous solid particulate briquetting.The nickeliferous solid particulate briquetting preparing thus has good guarantor's type ability and bending strength, can meet scene and have bad luck and enter the follow-up industrial requirements such as stove with electric furnace.
In a second aspect of the present invention, the present invention proposes a kind of method of preparing Rhometal, the method comprises: by foregoing method, prepare nickeliferous solid particulate briquetting; And in electric arc furnace, nickeliferous solid particulate briquetting is melted to a point smelting, to obtain Rhometal.The nickeliferous solid particulate briquetting preparing by foregoing method thus melts a point smelting can reduce the step that nickeliferous solid particulate briquetting is dried in advance, can further save thus the cost of preparing nickel-containing alloys.
In some embodiments of the invention, the above-mentioned method of preparing Rhometal also comprises: red soil nickel ore is carried out to fragmentation, and with rotary hearth furnace to carrying out direct-reduction through broken red soil nickel ore, to obtain spongy ferronickel reduzate; Spongy ferronickel reduzate is carried out to ball milling and magnetic separation, obtain mill and select product; In paddle agitator, select product to mix on gear oil and mill and stir 90 minutes, wherein, selecting product, the consumption of gear oil based on 100 weight part mills is 0.3 weight part; In paddle agitator, add white lime and be dry mixed 3 minutes, wherein, selecting product, the consumption of white lime based on 100 weight part mills is 3.6 weight parts; In paddle agitator, add syrup and carry out batch mixing 3 minutes, wherein, selecting product, the consumption of syrup based on 100 weight part mills is 6.0 weight parts; In hydraulic pressure briquetting press, at 3.15t/cm
2pressure under, the mixture obtaining in paddle agitator is carried out to briquetting, to obtain nickeliferous solid particulate briquetting; Nickeliferous solid particulate briquetting is joined in electric arc furnace and melts a point smelting, to obtain Rhometal.
Utilize thus the method for preparing nickel-containing alloys of the above embodiment of the present invention significantly to reduce production costs, especially the more traditional employing water glass of method that nickeliferous solid particulate is carried out to agglomeration in above-described embodiment is significantly saved agglomeration cost as binding agent agglomeration method.And utilize the nickeliferous solid particulate briquetting water content that in above-described embodiment, agglomeration method prepares lower, before melting point smelting, without carrying out drying and processing, reduced thus the cost of preparing Rhometal.
Can also there is following advantages according to the method for the nickeliferous solid particulate briquetting of the preparation of the specific embodiment of the invention:
1, the advantage of the method maximum of the nickeliferous solid particulate briquetting of preparation of the invention process is to have saved the baking operation after briquetting, and this is of great importance industrial, the one, and the energy cost of having saved baking needed, the 2nd, the investment of having saved huge drying plant.
2, organic coating agent is industrial machine oil, and raw material is easy to obtain, and add-on is little, and cost is little.
3, organic coating agent add mode simple, directly with a paddle agitator.
4, the ingenious heat that utilizes thermopositive reaction, promotes binding agent quick acting, and production efficiency is improved greatly.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiment are only descriptive, and do not limit the present invention in any way.
Embodiment 1
Providing red soil nickel ore mill to select product, mean particle size is 75 microns, and water content is 1.23 % by weight.
In paddle agitator, select product to mix on gear oil and mill and stir 90 minutes, wherein, selecting product, the consumption of gear oil based on 100 weight part mills is 0.3 weight part; In paddle agitator, add white lime and be dry mixed 3 minutes, wherein, selecting product, the consumption of white lime based on 100 weight part mills is 3.6 weight parts; In paddle agitator, add syrup waste liquid and carry out batch mixing 3 minutes, wherein, selecting product, the consumption of syrup waste liquid based on 100 weight part mills is 6.0 weight parts; There is obvious temperature and raise in material, reaches after tested 83 ℃.On the hydraulic pressure briquetting press of 400 tons, adopt 3.15t/cm
2under pressure condition, the mixture obtaining in paddle agitator being carried out to briquetting, is 110 millimeters to obtain diameter, and every weight is 1.8 kilograms, density 5.36g/cm
3nickeliferous solid particulate briquetting; Products obtained therefrom need not be dried, and is stored up after 3 hours and can directly send in electric arc furnace and melt a point smelting, to obtain Rhometal.
Embodiment 2
Providing red soil nickel ore mill to select product, mean particle size is 75 microns, and water content is 0.74 % by weight.
In paddle agitator, select product to mix on gear oil and mill and stir 90 minutes, wherein, selecting product, the consumption of gear oil based on 100 weight part mills is 0.3 weight part; In paddle agitator, add white lime and be dry mixed 3 minutes, wherein, selecting product, the consumption of white lime based on 100 weight part mills is 3.6 weight parts; In paddle agitator, add syrup waste liquid and carry out batch mixing 3 minutes, wherein, selecting product, the consumption of syrup waste liquid based on 100 weight part mills is 6.0 weight parts; There is obvious temperature and raise in material, reaches after tested 83 ℃.On the hydraulic pressure briquetting press of 400 tons, adopt 3.15t/cm
2under pressure condition, the mixture obtaining in paddle agitator being carried out to briquetting, is 110 millimeters to obtain diameter, and every weight is 1.7 kilograms, density 4.95g/cm
3nickeliferous solid particulate briquetting; Products obtained therefrom need not be dried, and is stored up after 3 hours and can directly send in electric arc furnace and melt a point smelting, to obtain Rhometal.
Embodiment 3
Providing red soil nickel ore mill to select product, mean particle size is 75 microns, and water content is 0.56 % by weight.
In paddle agitator, select product to mix on gear oil and mill and stir 90 minutes, wherein, selecting product, the consumption of gear oil based on 100 weight part mills is 0.3 weight part; In paddle agitator, add white lime and be dry mixed 3 minutes, wherein, selecting product, the consumption of white lime based on 100 weight part mills is 3.6 weight parts; In paddle agitator, add syrup waste liquid and carry out batch mixing 3 minutes, wherein, selecting product, the consumption of syrup waste liquid based on 100 weight part mills is 6.0 weight parts; There is obvious temperature and raise in material, reaches after tested 83 ℃.On the hydraulic pressure briquetting press of 400 tons, adopt 3.15t/cm
2under pressure condition, the mixture obtaining in paddle agitator being carried out to briquetting, is 110 millimeters to obtain diameter, and every weight is 1.5 kilograms, density 4.79g/cm
3nickeliferous solid particulate briquetting; Products obtained therefrom need not be dried, and is stored up after 3 hours and can directly send in electric arc furnace and melt a point smelting, to obtain Rhometal.
Embodiment 4
Providing red soil nickel ore mill to select product, mean particle size is 75 microns, and water content is 0.54 % by weight.
In paddle agitator, select product to mix on gear oil and mill and stir 90 minutes, wherein, selecting product, the consumption of gear oil based on 100 weight part mills is 0.3 weight part; In paddle agitator, add white lime and be dry mixed 3 minutes, wherein, selecting product, the consumption of white lime based on 100 weight part mills is 3.6 weight parts; In paddle agitator, add syrup waste liquid and carry out batch mixing 3 minutes, wherein, selecting product, the consumption of syrup waste liquid based on 100 weight part mills is 6.0 weight parts; There is obvious temperature and raise in material, reaches after tested 83 ℃.On the hydraulic pressure briquetting press of 400 tons, adopt 3.15t/cm
2under pressure condition, the mixture obtaining in paddle agitator being carried out to briquetting, is 110 millimeters to obtain diameter, and every weight is 1.6 kilograms, density 4.86g/cm
3nickeliferous solid particulate briquetting; Products obtained therefrom need not be dried, and is stored up after 3 hours and can directly send in electric arc furnace and melt a point smelting, to obtain Rhometal.
Comparative example 1
In paddle agitator, be that 75 microns of following nickeliferous solid particulates and sodium silicate binder stir 6～10 minutes by the mean particle size obtaining by step (1).Wherein, selecting product, the add-on of sodium silicate binder based on 100 weight part mills is 7 weight parts.Then on the hydraulic pressure briquetting press of 400 tons, adopt 4t/cm
2under pressure condition, the mixture obtaining in paddle agitator is carried out to briquetting.
Evaluation method
Respectively water content, density and the intensity of the nickeliferous solid particulate briquetting preparing in embodiment 1-4 and comparative example 1 are measured.Result is as table 1.
Table 1
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (9)
1. a method of preparing nickeliferous solid particulate briquetting, is characterized in that, comprising:
(1) provide nickeliferous solid particulate, the mean particle size of described nickeliferous solid particulate is below 75 microns;
(2) utilize organic coating agent, described nickeliferous solid particulate is coated to processing;
(3) coated the process obtaining in step (2) the nickeliferous solid particulate of processing is mixed with binding agent, wherein, described binding agent contains syrup and white lime; And
(4) mixture obtaining in step (3) is carried out to briquetting processing, to obtain described nickeliferous solid particulate briquetting.
2. method according to claim 1, is characterized in that, in described nickeliferous solid particulate, 90% grain graininess is below 75 microns.
3. want the method described in 1 according to right, it is characterized in that, described nickeliferous solid particulate obtains through the following steps:
In rotary hearth furnace, red soil nickel ore is carried out to direct-reduction, to obtain ferronickel reduzate; And
Described ferronickel reduzate is carried out to ball milling and magnetic separation, to obtain described nickeliferous solid particulate.
4. method according to claim 1, is characterized in that, it is liquid hydrocarbons that described organic coating agent comprises under normal temperature, and for example comprising under normal temperature is liquid alkane.
5. method according to claim 1, is characterized in that, described organic coating agent is lubricating oil, and for example gear oil, such as waste and old gear oil.
6. method according to claim 1, is characterized in that, the syrup waste liquid that described syrup is sugar industry.
7. method according to claim 1, is characterized in that, based on the described nickeliferous solid particulate of 100 weight parts, the consumption of described organic coating agent is 0.3 weight part, and the consumption of described syrup is 6 weight parts, and the consumption of described white lime is 3.6 weight parts.
8. a method of preparing Rhometal, is characterized in that, comprising:
By the method described in claim 1～7 any one, prepare nickeliferous solid particulate briquetting; And
In electric arc furnace, described nickeliferous solid particulate briquetting is melted to a point smelting, to obtain Rhometal.
9. method according to claim 8, is characterized in that comprising:
Red soil nickel ore is carried out to fragmentation, and with rotary hearth furnace to carrying out direct-reduction through broken red soil nickel ore, to obtain spongy ferronickel reduzate;
Described spongy ferronickel reduzate is carried out to ball milling and magnetic separation, obtain mill and select product;
In paddle agitator, select product to mix with described mill gear oil and stir 90 minutes, wherein, selecting product, the consumption of described gear oil based on mill described in 100 weight parts is 0.3 weight part;
In described paddle agitator, add white lime and be dry mixed 3 minutes, wherein, selecting product, the consumption of described white lime based on mill described in 100 weight parts is 3.6 weight parts;
In described paddle agitator, add syrup and carry out batch mixing 3 minutes, wherein, selecting product, the consumption of described syrup based on mill described in 100 weight parts is 6.0 weight parts;
In hydraulic pressure briquetting press, at 3.15t/cm
2pressure under, the mixture obtaining in described paddle agitator is carried out to briquetting, to obtain nickeliferous solid particulate briquetting; Described nickeliferous solid particulate briquetting is joined in electric arc furnace and melts a point smelting, to obtain Rhometal.
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| CN113102751A (en) * | 2021-04-16 | 2021-07-13 | 昆明理工大学 | Method for coating copper on surface of sodium chloride particle |
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