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Iron-based pre-alloyed powder prepared through recycled nickel and cobalt and preparing method

A technology for pre-alloyed powder and alloy powder is applied in the field of nickel-cobalt preparation of iron-based pre-alloyed powder, which can solve the problems of high cost and complicated method, and achieve the effects of improving processing efficiency, uniform structure and good formability.

Active Publication Date: 2017-01-04
HUBEI EXIN DIAMOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Another object of the present invention is to provide a kind of method that utilizes the nickel-cobalt that diamond composite rod reclaims to prepare iron-based pre-alloy powder, in this method, the nickel-cobalt that mainly reclaims with diamond composite rod is the source of nickel and cobalt in the powder, The preparation method is easy to operate and the operation is simple, which solves the problems of complex methods and high costs in the process of recycling nickel and cobalt recovered by electrolysis of diamond synthetic rods

Method used

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  • Iron-based pre-alloyed powder prepared through recycled nickel and cobalt and preparing method
  • Iron-based pre-alloyed powder prepared through recycled nickel and cobalt and preparing method
  • Iron-based pre-alloyed powder prepared through recycled nickel and cobalt and preparing method

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Effect test

Embodiment 1

[0032] A kind of reclaimed nickel-cobalt prepares iron-base pre-alloyed powder, and it is the source of nickel and cobalt in the powder with the nickel-cobalt reclaimed by diamond synthetic rod, is made of the raw material of following weight portion:

[0033]

[0034]

[0035] A method for preparing iron-based pre-alloyed powder from nickel-cobalt recovered from a diamond synthesis rod, the steps are:

[0036] 1) Composition testing. Firstly, the composition analysis of waste nickel and cobalt plates recovered by chemical electrolysis of artificial diamond wastewater was carried out, and the contents of nickel and cobalt elements were 90.1% and 8.0% respectively.

[0037] 2) Ingredients. Calculated according to the weight percentage, according to a certain proportion, weigh 16.5kg of recovered nickel-cobalt blocks, 10kg of copper, 3.7kg of cobalt, and 1kg of chromium, and pass through a 300-mesh sieve graphite powder 0.5kg.

[0038] 3) Water atomization powder making...

Embodiment 2

[0042] A kind of reclaimed nickel-cobalt prepares iron-base pre-alloyed powder, and it is the source of nickel and cobalt in the powder with the nickel-cobalt reclaimed by diamond synthetic rod, is made of the raw material of following weight portion:

[0043]

[0044] A method for preparing iron-based pre-alloyed powder from nickel and cobalt recovered from diamond synthesis rods can be prepared according to the following steps:

[0045] 1) Composition testing. Firstly, the composition analysis of waste nickel and cobalt plates recovered by chemical electrolysis of artificial diamond wastewater was carried out, and the contents of nickel and cobalt elements were 94.5% and 3.5% respectively.

[0046]2) Ingredients. Calculated according to the percentage by weight, weigh 26.5kg of recovered nickel-cobalt blocks, 5kg of copper, 2.1kg of cobalt, and 2kg of chromium in iron, nickel, copper, cobalt, and chromium according to a certain proportion, and pass through a 300-mesh sie...

Embodiment 3

[0050] A method for preparing iron-based pre-alloyed powder from reclaimed nickel-cobalt, which uses the reclaimed nickel-cobalt from diamond composite rods as the source of nickel and cobalt in the powder, and is made from the following raw materials in parts by weight:

[0051]

[0052] A method for preparing iron-based pre-alloyed powder from nickel and cobalt recovered from diamond synthesis rods can be prepared according to the following steps:

[0053] 1) Composition testing. Firstly, the composition analysis of waste nickel and cobalt plates recovered by chemical electrolysis of artificial diamond wastewater was carried out, and the contents of nickel and cobalt elements were 94.5% and 3.5% respectively.

[0054] 2) Ingredients. Calculated according to the weight percentage, weigh iron: nickel: copper: cobalt: 15.9kg of recovered nickel-cobalt block, 5kg of copper, 2.4kg of cobalt, 2kg of chromium, and pass through a 300-mesh sieve graphite powder 0.5kg.

[0055] ...

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Abstract

The invention discloses iron-based pre-alloyed powder prepared through recycled nickel and cobalt and a preparing method. The powder is composed of iron, nickel, copper, cobalt and chromium according to a certain proportion. The method comprises the steps of firstly, component detection, wherein an artificial diamond wastewater chemical electrolytic recovery waste nickel and cobalt plate is analyzed, and the content of nickel and cobalt is determined; secondly, material preparing, wherein according to the detected nickel and cobalt content result, iron, nickel, copper, cobalt and chromium are calculated, and according to the total weight of graphite powder : metal, graphite powder is prepared; thirdly, water atomization powder making, wherein the prepared metal is placed in an intermediate frequency furnace, nitrogen is used for forming a gas curtain, air is isolated, after the mixed metal is molten, the graphite powder is added, and liquid metal is crushed and atomized into alloy powder through high-pressure water; fourthly, screening blending, wherein the prepared alloy powder is sieved, and is sufficiently blended in a mixing machine, and the pre-alloyed powder is obtained. The method is reasonable in formula, simple in production technology, low in powder oxygen content, uniform in granularity and good in cold pressing molding, and has the wide application prospect in diamond cutters and tool structural parts.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a method for preparing iron-based pre-alloyed powder from nickel and cobalt recovered from diamond synthesis rods. Background technique [0002] As we all know, China is the largest producer of synthetic diamonds in the world. In recent years, due to the rapid development of the global information industry, architectural decoration, oil drilling, etc., the demand for synthetic diamond and diamond products has grown rapidly, with an annual growth rate of 37%. As of the end of 2013, my country's synthetic diamond output reached 15.1 billion carats (1 carat = 0.2 grams), accounting for more than 90% of the world's total output. [0003] Synthetic diamond is formed by using about 60wt.% graphite and 40wt.% metal catalyst (called metal catalyst in the synthetic diamond industry) under high temperature and high pressure. The main component of the catalyst is from the previous Ni 70 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F1/00C22C38/08C22C38/10C22C38/16C22C38/18
CPCB22F1/0003B22F9/082B22F2009/0848C22C38/105C22C38/16C22C38/18
Inventor 向后奎何南兵王腾吉赵亚良
Owner HUBEI EXIN DIAMOND TECH
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