CN112680556A - Method for preparing ferrotitanium alloy block and cored wire by using high-titanium waste secondary resource - Google Patents
Method for preparing ferrotitanium alloy block and cored wire by using high-titanium waste secondary resource Download PDFInfo
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- CN112680556A CN112680556A CN202011452319.XA CN202011452319A CN112680556A CN 112680556 A CN112680556 A CN 112680556A CN 202011452319 A CN202011452319 A CN 202011452319A CN 112680556 A CN112680556 A CN 112680556A
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Abstract
The invention belongs to the technical field of utilization of high-titanium waste secondary resources, and discloses a method for preparing ferrotitanium alloy blocks and cored wires by using high-titanium waste secondary resources, which comprises the following steps: pretreating high-titanium waste secondary resources to obtain waste titanium block materials; sampling, testing and analyzing the obtained waste titanium block material block, and adding a certain proportion of waste steel resources according to a test result; melting and homogenizing waste titanium block materials and waste steel resources in an intermediate frequency furnace; and sampling the molten iron in the intermediate frequency furnace, detecting main elements contained in the samples, and then carrying out alloy fine adjustment and harmful element impurity removal on the molten iron in the intermediate frequency furnace according to the detection result to obtain the molten iron meeting the requirements. The ferrotitanium alloy block and ferrotitanium core-spun wire titanium produced by the method are finally used for molten steel titanium alloying and titanium component fine adjustment, the yield of titanium can reach more than 80%, and the molten steel titanium alloying quality is stable, so that the utilization of high-titanium waste secondary resources has higher economic benefit and popularization value.
Description
Technical Field
The invention belongs to the technical field of utilization of high-titanium waste secondary resources, and particularly relates to a method for preparing a ferrotitanium alloy block by using the high-titanium waste secondary resources and a method for preparing a ferrotitanium core-spun yarn by using the high-titanium waste secondary resources.
Background
The high titanium waste secondary resource mainly refers to the fact that leftover materials of high-purity titanium materials and high-purity titanium alloys are used as main materials, the secondary resource is directly returned to steel for years without any treatment, the recovery rate of titanium is only 45% -60%, the quality fluctuation is large, the recovery rate is unstable, and the price of the titanium resource is high.
Disclosure of Invention
In order to solve the problem of low recovery rate of waste high-titanium secondary resources in the prior art, the invention aims to provide a method for preparing a ferrotitanium alloy block by using the high-titanium waste secondary resources and a method for preparing a ferrotitanium cored wire by using the high-titanium waste secondary resources.
The technical scheme adopted by the invention is as follows:
in one aspect, a method for preparing a ferrotitanium alloy block from a high-titanium waste secondary resource is provided, and the method comprises the following steps:
pretreating high-titanium waste secondary resources to obtain waste titanium block materials;
sampling, testing and analyzing the obtained waste titanium block material block, and adding a certain proportion of waste steel resources according to a test result;
melting and homogenizing waste titanium block materials and waste steel resources in an intermediate frequency furnace;
sampling the ferrotitanium water in the intermediate frequency furnace, detecting main elements contained in the samples, and then carrying out alloy fine adjustment and harmful element impurity removal on the ferrotitanium water in the intermediate frequency furnace according to a detection result to obtain the ferrotitanium water meeting the requirements;
and cooling the ferrotitanium water ingot meeting the requirements, and crushing the cooled ferrotitanium water ingot to obtain a ferrotitanium alloy block.
In an optional technical scheme, the method for pretreating the high-titanium waste secondary resource comprises the following steps:
the method comprises the steps of removing impurities from high-titanium waste secondary resources, burning the high-titanium waste secondary resources by using a resistance furnace to reduce surface impurities, and then packaging the high-titanium waste secondary resources into packaging blocks with the size not larger than 50cm by using an automatic pressure packaging machine for later use.
In an optional technical scheme, the scrap steel resource comprises a scrap steel cutting head and a scrap steel plate.
In an optional technical scheme, the titanium waste resource comprises titanium-containing waste resource with titanium content more than 80%.
In an optional technical scheme, the titanium content in the satisfactory ferrotitanium water is 35-72%.
In an optional technical scheme, the size specifications of the ferrotitanium alloy block comprise 3 mm-20 mm and 20 mm-50 mm.
In an optional technical scheme, the ferrotitanium alloy block is used for titanium alloying of molten steel.
On the other hand, the ferrotitanium water after cast ingot cooling is crushed by utilizing the method for preparing the ferrotitanium block by using the high-titanium waste secondary resource, ferrotitanium powder is obtained, and the ferrotitanium core-spun yarn finished product is prepared from the ferrotitanium powder by a core-spun yarn machine set.
In an optional technical scheme, the diameter of the ferrotitanium core-spun yarn is 9-13 mm, and a steel strip used by the ferrotitanium core-spun yarn is a cold-rolled steel strip made of Q195-Q235.
In an optional technical scheme, the ferrotitanium alloy powder is used for molten steel titanium alloying and titanium component fine adjustment.
The invention has the beneficial effects that:
the invention takes high titanium waste secondary resources as main raw materials, adds waste steel block resources according to the requirement of produced ferrotitanium water after batch inspection, melts and homogenizes the waste titanium material block materials and the waste steel resources by an intermediate frequency furnace, develops ferrotitanium alloy blocks and ferrotitanium cored wires which can be used for molten steel titanium alloying and titanium component fine adjustment, expands the recycling use of the high titanium waste secondary resources and improves the recovery rate.
Moreover, the ferrotitanium alloy block and ferrotitanium core-spun wire titanium produced by the high-titanium secondary resource are finally used for molten steel titanium alloying and titanium component fine adjustment, the yield of titanium can reach more than 80%, and the molten steel titanium alloying quality is stable, so that the utilization of the high-titanium waste secondary resource has higher economic benefit and value of wide popularization and application.
Detailed Description
The present invention is further illustrated below with reference to specific examples.
Example 1:
a method for preparing a ferrotitanium alloy block from a high-titanium waste secondary resource, the method comprising:
s1, pretreating the high-titanium waste secondary resource to obtain a waste titanium block material;
the method for pretreating the high-titanium waste secondary resource comprises the following steps: the method comprises the steps of removing impurities from high-titanium waste secondary resources, burning the high-titanium waste secondary resources by using a resistance furnace to reduce surface impurities, and then packaging the high-titanium waste secondary resources into packaging blocks with the size not larger than 50cm by using an automatic pressure packaging machine for later use. The waste titanium resource refers to titanium-containing resources such as high-purity waste titanium plates with the titanium content of more than 80 percent.
S2, sampling, testing and analyzing the obtained waste titanium block material block, and adding a certain proportion of waste steel resources according to the test result;
wherein the steel scrap resources are high-quality, low-phosphorus and low-sulfur steel scrap resources including steel scrap crop ends, steel scrap plates and the like.
S3, melting and homogenizing the waste titanium block material and the waste steel resource in an intermediate frequency furnace;
s4, sampling the molten iron in the intermediate frequency furnace, testing main elements contained in the samples, and then carrying out alloy fine adjustment and harmful element impurity removal on the molten iron in the intermediate frequency furnace according to the test result to obtain the molten iron meeting the requirements;
wherein the titanium content in the titanic iron water meeting the requirement is 35-72 percent.
And S5, cooling the ferrotitanium water cast ingot meeting the requirement, and crushing the ferrotitanium water cast ingot after cooling to obtain the ferrotitanium alloy block.
Wherein the ferrotitanium alloy block is used for titanium alloying of molten steel. The physical size specification of the ferrotitanium alloy block is two size specifications of 3 mm-20 mm and 20 mm-50 mm. In this example, the molten ferrotitanium after the ingot is cooled may be crushed into a lump or may be crushed into a lump containing a pulverized powder and then sieved to obtain a titanium alloy fraction.
Example 2:
a method for preparing a ferrotitanium cored wire by using high-titanium waste secondary resources comprises the following steps:
s1, pretreating the high-titanium waste secondary resource to obtain a waste titanium block material;
the method for pretreating the high-titanium waste secondary resource comprises the following steps: the method comprises the steps of removing impurities from high-titanium waste secondary resources, burning the high-titanium waste secondary resources by using a resistance furnace to reduce surface impurities, and then packaging the high-titanium waste secondary resources into packaging blocks with the size not larger than 50cm by using an automatic pressure packaging machine for later use. The waste titanium resource refers to titanium-containing resources such as high-purity waste titanium plates with the titanium content of more than 80 percent.
S2, sampling, testing and analyzing the obtained waste titanium block material block, and adding a certain proportion of waste steel resources according to the test result;
wherein the steel scrap resources are high-quality, low-phosphorus and low-sulfur steel scrap resources including steel scrap crop ends, steel scrap plates and the like.
S3, melting and homogenizing the waste titanium block material and the waste steel resource in an intermediate frequency furnace;
s4, sampling the molten iron in the intermediate frequency furnace, testing main elements contained in the samples, and then carrying out alloy fine adjustment and harmful element impurity removal on the molten iron in the intermediate frequency furnace according to the test result to obtain the molten iron meeting the requirements;
wherein the titanium content in the titanic iron water meeting the requirement is 35-72 percent.
And S5, cooling the ferrotitanium water ingot meeting the requirement, crushing the cooled ferrotitanium water ingot to obtain ferrotitanium alloy powder, and preparing the ferrotitanium alloy powder into a finished ferrotitanium cored wire product through a cored wire unit.
Wherein, the finished product of the ferrotitanium cored wire is used for finely adjusting the titanium component of molten steel. The ferrotitanium powder is fine powder with the granularity of 0-3 mm. The diameter of the ferrotitanium core-spun yarn is 9-13 mm, and the steel strip used by the core-spun yarn is a cold-rolled steel strip made of Q195-Q235.
Example 3:
different from the above embodiment, in step S5, after the molten ferrotitanium cast ingot is cooled, it is crushed by a jaw crusher and then sieved to obtain ferrotitanium powder and ferrotitanium blocks, the ferrotitanium blocks are directly packed into finished products, and the ferrotitanium powder is processed into finished cored wire products by a cored wire machine set. Finally, the prepared ferrotitanium alloy block and ferrotitanium core-spun yarn finished product are used for molten steel titanium alloying and titanium component fine adjustment.
In the embodiment, the preparation of the ferrotitanium alloy block and the ferrotitanium core-spun yarn finished product can be completed at one time, and the efficiency is higher.
Test example:
1. firstly, carrying out manual primary impurity removal and raw material surface treatment on leftover materials of titanium section bars of a certain factory 1 according to requirements, carrying out batch sampling inspection, detecting the titanium content to be 85.74%, then adding 1t of the leftover materials of the certain factory 1 into a medium-frequency induction furnace with the capacity of 2t, then adding 0.8t of heavy rail scrap steel crop ends for smelting, adding part of slag materials and alloys for slagging, deoxidation and alloy fine adjustment, then carrying out ingot casting cooling, crushing and screening to obtain ferrotitanium alloy blocks with the titanium content of 45.64% and the size of 60mm, using the ferrotitanium alloy blocks for molten steel titanium alloying, and finally obtaining the titanium yield of 80.23%.
2. Firstly, manually removing impurities and carrying out surface treatment on raw materials of high-purity titanium plate leftover materials of a certain factory 2 once according to requirements, carrying out batch sampling inspection, detecting the titanium content to be 98.34%, then adding 0.8t of the leftover materials of the certain factory 2 into a medium-frequency induction furnace with the capacity of 2t, then adding 0.6t of heavy rail scrap steel crop end for smelting, adding part of slag materials and alloys for slagging, deoxidizing and fine adjusting the alloys, then carrying out ingot casting cooling, crushing and screening to obtain the ferrotitanium powder with the titanium content of 70.02% and the granularity of 0-3 mm, and finally carrying out fine adjustment on the titanium component of molten steel after the ferrotitanium powder is used for producing a core-spun yarn finished product with the diameter of 10mm by a core-spun yarn machine set, and finally obtaining the titanium yield of.
The invention takes high titanium waste secondary resources as main raw materials, adds waste steel block resources according to the requirement of produced ferrotitanium water after batch inspection, melts and homogenizes the waste titanium material block materials and the waste steel resources by an intermediate frequency furnace, develops ferrotitanium alloy blocks and ferrotitanium cored wires which can be used for molten steel titanium alloying and titanium component fine adjustment, expands the recycling use of the high titanium waste secondary resources and improves the recovery rate.
Moreover, the ferrotitanium alloy block and ferrotitanium core-spun wire titanium produced by the high-titanium secondary resource are finally used for molten steel titanium alloying and titanium component fine adjustment, the yield of titanium can reach more than 80%, and the molten steel titanium alloying quality is stable, so that the utilization of the high-titanium waste secondary resource has higher economic benefit and value of wide popularization and application.
The present invention is not limited to the above-described alternative embodiments, and various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.
Claims (10)
1. A method for preparing a ferrotitanium alloy block by using high-titanium waste secondary resources is characterized by comprising the following steps: the method comprises the following steps:
pretreating high-titanium waste secondary resources to obtain waste titanium block materials;
sampling, testing and analyzing the obtained waste titanium block material block, and adding a certain proportion of waste steel resources according to a test result;
melting and homogenizing waste titanium block materials and waste steel resources in an intermediate frequency furnace;
sampling the ferrotitanium water in the intermediate frequency furnace, detecting main elements contained in the samples, and then carrying out alloy fine adjustment and harmful element impurity removal on the ferrotitanium water in the intermediate frequency furnace according to a detection result to obtain the ferrotitanium water meeting the requirements;
and cooling the ferrotitanium water ingot meeting the requirements, and crushing the cooled ferrotitanium water ingot to obtain a ferrotitanium alloy block.
2. The method for preparing the ferrotitanium alloy block by using the high-titanium waste secondary resource as claimed in claim 1, wherein the method comprises the following steps: the method for pretreating the high-titanium waste secondary resource comprises the following steps:
the method comprises the steps of removing impurities from high-titanium waste secondary resources, burning the high-titanium waste secondary resources by using a resistance furnace to reduce surface impurities, and then packaging the high-titanium waste secondary resources into packaging blocks with the size not larger than 50cm by using an automatic pressure packaging machine for later use.
3. The method for preparing the ferrotitanium alloy block by using the high-titanium waste secondary resource as claimed in claim 1, wherein the method comprises the following steps: the scrap steel resource comprises a scrap steel cutting head and a scrap steel plate.
4. A process for the production of ferrotitanium alloy ingots from spent secondary resources of high titanium according to any one of claims 1 to 3, characterised in that: the titanium waste resource comprises titanium-containing waste resource with titanium content more than 80%.
5. The method for preparing the ferrotitanium alloy block by using the high-titanium waste secondary resource as claimed in claim 1, wherein the method comprises the following steps: the titanium content of the titanic iron water meeting the requirements is 35 to 72 percent.
6. The method for preparing the ferrotitanium alloy block by using the high-titanium waste secondary resource as claimed in claim 1, wherein the method comprises the following steps: the size specification of the ferrotitanium alloy block comprises 3 mm-20 mm and 20 mm-50 mm.
7. The method for preparing the ferrotitanium alloy block by using the high-titanium waste secondary resource as claimed in claim 6, wherein the method comprises the following steps: the ferrotitanium alloy block is used for titanium alloying of molten steel.
8. A method for preparing a ferrotitanium core-spun yarn by using high-titanium waste secondary resources is characterized by comprising the following steps: the ferrotitanium water after ingot casting and cooling by the method for preparing ferrotitanium blocks by using the high-titanium waste secondary resources, which is described in any one of claims 1 to 7, is crushed to obtain ferrotitanium powder, and the ferrotitanium powder is made into a ferrotitanium core-spun yarn finished product by a core-spun yarn machine set.
9. The method for preparing the ferrotitanium cored wire by using the high-titanium waste secondary resource according to claim 8, characterized in that: the diameter of the ferrotitanium core-spun yarn is 9 mm-13 mm, and the steel strip used by the ferrotitanium core-spun yarn is a cold-rolled steel strip made of Q195-Q235.
10. The method for preparing the ferrotitanium cored wire by using the high-titanium waste secondary resource according to claim 1, which is characterized in that: the ferrotitanium cored wire finished product is used for finely adjusting the titanium component of molten steel.
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| CN202011452319.XA CN112680556A (en) | 2020-12-09 | 2020-12-09 | Method for preparing ferrotitanium alloy block and cored wire by using high-titanium waste secondary resource |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126766A (en) * | 1995-08-23 | 1996-07-17 | 宝鸡特殊钢厂 | Production process of ferro-titanium alloy |
| CN202369603U (en) * | 2011-12-07 | 2012-08-08 | 上海马腾新型材料厂 | Low nitrogen titanium iron core-spun yarn |
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2020
- 2020-12-09 CN CN202011452319.XA patent/CN112680556A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126766A (en) * | 1995-08-23 | 1996-07-17 | 宝鸡特殊钢厂 | Production process of ferro-titanium alloy |
| CN202369603U (en) * | 2011-12-07 | 2012-08-08 | 上海马腾新型材料厂 | Low nitrogen titanium iron core-spun yarn |
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Application publication date: 20210420 |