Nickel ore selection process
Nickel ore is mainly divided into copper- nickel-nickel ore and nickel-nickel ore, and the processing and processing methods of the two are completely different.
The most suitable method for the beneficiation of copper-copper-nickel ore is flotation, and magnetic separation and re-election is usually an auxiliary beneficiation method. When flotation of copper-nickel ore, a collector and a foaming agent for flotation of copper sulfide minerals are often used. One of the basic principles for determining the flotation process is to allow copper to enter the nickel concentrate while avoiding nickel from entering the copper concentrate. Because the nickel in the copper concentrate loses a lot during the smelting process, the copper in the nickel concentrate can be recovered more completely. Copper-nickel ore flotation has the following four basic processes.
Direct use of priority flotation or partial priority flotation process: When the ore contains more copper than nickel, this process can be used to select copper as a separate concentrate. The advantage of this process is that copper concentrates with lower nickel content can be obtained directly.
1. Mixed flotation process: used to select ore containing copper lower than nickel, and the obtained copper-nickel mixed concentrate is directly smelted into high-ice nickel.
2. Mixing - Preferred flotation process: mixing flotation of copper and nickel from the ore, and then separating the copper concentrate containing low nickel and the nickel concentrate containing copper from the mixed concentrate. After the nickel concentrate is smelted, high ice nickel is obtained, and the high ice nickel is further subjected to flotation separation.
3, mixing - preferential flotation and recovery of part of the nickel from the mixed flotation tailings: when the floatability of various nickel minerals in the ore is very different, after the copper-nickel mixed flotation, and then from its tailings Further recycling of nickel-containing minerals with poor floatability.
Copper is a harmful impurity in nickel smelting, and copper grade in copper-nickel ore has industrial recycling value. Therefore, copper-nickel separation technology is an important issue in copper-nickel ore beneficiation. The copper-nickel separation technology is divided into two types: copper-nickel mixed concentrate separation and high-ice nickel separation process. Usually, the former is used for ore of copper-nickel minerals having a relatively large particle size and not closely related to each other, and the latter is used for ore having a fine grain size and densely embedded with each other.
Copper Nickel Gold River large metal associated nickel copper sulfide. The beneficiation process of the first beneficiation plant mainly includes: crushing into three sections and one closed circuit process; grinding and flotation process is transformed into three sections of grinding and three stages of flotation.
At present, copper-nickel sulfide ore is mainly smelted by fire method. The Jinchuan Nickel Mine is no exception. The basic process is divided into materials (baking)—smelting-blowing-refining (electrolysis). Since the ore is a serpentine type ore, the copper-nickel minerals are densely embedded with each other, and it is difficult to directly separate the copper and nickel by mechanical beneficiation methods. Therefore, a high-ice nickel flotation separation technique is adopted. The copper-nickel mixed concentrate is smelted into high-ice nickel by a converter, then subjected to crushing and grinding processes, and finally electrolyzed into a final product, electrolytic nickel.
The Jilin gangue mine is also a copper-nickel mine. The ore processing process uses a three-stage closed-circuit crushing, stage grinding, copper-nickel mixing-separation flotation, nickel concentrate three-stage dewatering, and copper concentrate two-stage dewatering process.
Nickel oxide ore currently uses a process such as crushing and sieving to remove a large bedrock with a weak degree of weathering and a low nickel content. Since nickel in nickel oxide ore is often dispersed in gangue minerals with the same type of similarity, and the particle size is very fine, it cannot be enriched by mechanical beneficiation methods and can only be directly smelted.
The smelting and enriching method of nickel oxide ore can be divided into two major categories: fire method and wet method. The former can be divided into sulfur smelting, nickel iron method and granular iron method; the latter has reduction roasting - atmospheric ammonia leaching method, high pressure acid leaching method and the like.
Die Casting is a Metal Casting process that
is characterized by forcing molten metal under high pressure into a mold cavity.
The mold cavity is created using two hardened tool steel dies which have been
machined into shape and work similarly to an injection mold during the process.
Most die castings are made from non-ferrous metals, specifically zinc, copper,
aluminum, magnesium, lead, pewter and tin-based alloys. Depending on the type
of metal being cast, a hot- or cold-chamber machine is used.
The casting equipment and the metal dies
represent large capital costs and this tends to limit the process to
high-volume production. Manufacture of parts using die casting is relatively
simple, involving only four main steps, which keeps the incremental cost per
item low. It is especially suited for a large quantity of small- to
medium-sized castings, which is why die casting produces more castings than any
other casting process. Die castings are characterized by a very good surface
finish (by casting standards) and dimensional consistency.
The main die casting alloys are: zinc,
aluminum, magnesium, copper, lead, and tin; although uncommon, ferrous die
casting is also possible. Specific die casting alloys include: Zamark; zinc
aluminum; aluminum to, e.g. The Aluminum Association (AA) standards: AA 380, AA
384, AA 386, AA 390; and AZ91D magnesium. The following is a summary of the
advantages of each alloy:
Zinc: the easiest metal to cast; high
ductility; high impact strength; easily plated; economical for small parts;
promotes long die life.
We can supply big range of such die casting
parts.
A.
Main particulars
MAIN
PARTICULARS
Material
for mould
H13,DIEVAR,QDN,8407,2344V,TQ1,2343,SKD61,
Hardened,
HRC50~55
Mould
features
Advanced
design, Logical structure, High
precision,
Material
for product
Aluminum
& Aluminum alloy A356, A360, A380, A390, ADC-12,ADC10,
Zinc
& Zinc alloy. ZA-3,ZA-5,ZA-8
Standard
ASTM, ASME, DIN, JIS,
ISO, BS, API, EN
Certificate
ISO9001
Dimension
As
per drawing, as large as we can
Processing
Step1:
Die Casting
Step2:
CNC turning, CNC turning and milling compound processing, 3/4/5 axis CNC
milling, drilling, boring, wire-cutting, EDM, grinding etc.
Finishing
surface
Machined
surface with oil, blasting and painting, anodize, polishing, powder painting,
electrophoretic coating-
Marking
as
per clients` requirements
Inspection
material,
construction, dimension, heat treatment, hardness, NDT
Quality
ISO9001,
PPAP control production
Lead
time
20-30
days for sample, consult with customer for mass production
Delivery
Express
for sample, ocean shipping/air for mass production
Our
Capabilities
CNC
machining, CNC center machining, drilling, milling, turning, grinding,
tapping, boring
Engineering
& manufacturing services
R&D
process, tooling and gauging design, product design
Integrated
CAD/CAM system, test and measuring
Others
Recyclable,
in line with environmental requirements and standards, and reliable
C.
Construction
Construction
by die casting
D
Workmanship
The
workmanship have good production practice. Care are taken to ensure High
accuracy and smooth surfaces
E.
Certificates
-
Material certificates
-
Measuring reports
-
Inspection protocol
-
NDT reports
-
Fixed certificate: ISO9001 certificate
45#steel,etc.
Qualified materials, Long lifetime, Short delivery time.
Our
service
Besides
above the general specifications, we can also supply some specific machining
parts as clients' requirements.
Package
and shipping
Export
cartons, pallets, wooden cases, Polybags
container
package and container transportation
Die Casting Parts
Die Casting Parts,Pressure Die Casting Parts,Zinc Die Casting Parts,Die Casting
Shinvast Industry Ltd , http://www.shinvastindustry.com