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Product Introduction
>Product Introduction
Spiral classifier (Screw classifier）is one of the equipment for mineral processing. It is a mechanical classification device that uses the principle that the solid particles have different specific gravities, resulting in different sedimentation speeds in liquids. It can filter the mineral powder ground in the mill, and then use spiral blades to screw the coarse material into the feed inlet of the mill, and discharge the filtered fine material from the overflow pipe.
Spiral classifiers are widely used in mineral processing plants to form a closed-loop circulation process with ball mills for separating mineral sand, or in gravity beneficiation plants to classify ore sand and fine mud, as well as in metal beneficiation processes for particle size classification of slurry, and in mineral washing operations such as desliming and dewatering.
1. Blades of Classifier
This Blades was the most important working component of a Classifier, it’s shoulb be have high abrasion-resistant material, it is made of a new high-quality Cr-Mn alloy steel composite casting, its service life is better than other alloy material.
>Product Advantage
Relatively stable quality
High Mn-Cr alloy steel casting wear-parts have been used with a longer usage time history than other kind materials.
NGZR have more than 10 years experience of R&D / Manufacutring / After-sales srevice for High Mnganese & High Chromium alloy casting wear parts (such as high Chrome cast gridning media and high Mn-Cr alloy cast mill liner & crusher wear parts) in Mining & Cement & Aggregate Indusries.
Lower usage cost
Mn-Cr alloy steel cast waer part have long usage life with stable quality.
Because NGZR have large production capacity with Advanced Lost foam process full Automatic precision casting line and Resin-sand Wooden mould manual casting production line, we can supply more competive price products to help customer get lower production unit cost than before.
Customized alloy Steel composition
NGZR foundry was able to follw customer requrid to readjust the Chemical Composition of alloy steel content (Mn /Cr) , or increased other special metallic element (Si /Mo /Cu /Ni etc), through special heat-treatment processing, can help this casting wear parts achieve to special Mechanical performance, to follow different customer’s different working conditions.
Customized drawing size and shape
NGZR foundry can follow customer’s drawing of exist Screw Classifier wear part to customized . Also we can revised the exist wear parts shape / thickness and abrasion resistant quality to help customer get lower purchase cost and higher production efficiency.
Door to door measure & Installation Guide
If customer can’t provide drawing of existing Spiral Classifier, NGZR will arrange our service engineer come to measuring and design of the one-stop service with free of charge.
If customer required, NGZR provide door to door installation guide serivce with paid.
Technical Parameters
>Technical Parameters
| #1 Alloy Chemical Composition: | |||||||||
ITEM | C | Si | Mn | P | S | Cr | Mo | Ni | Cu |
Mn13Cr2 | 1.05-1.35 | 0.3-0.9 | 11-14 | ≤0.06 | ≤0.04 | 1.5-2.5 | -- | -- | -- |
Mn13Cr2Mo | 1.05-1.35 | 0.3-0.9 | 11-14 | ≤0.06 | ≤0.04 | 0.4-1.2 | 0.4-1.2 | -- | -- |
Mn18Cr2 | 1.05-1.35 | 0.3-0.9 | 16-19 | ≤0.06 | ≤0.04 | 1.5-2.5 | -- | -- | -- |
Mn22Cr2 | 1.05-1.35 | 0.3-0.9 | 20-22 | ≤0.06 | ≤0.04 | 1.5-2.5 | -- | -- | -- |
Cr26Ni5 | ≤0.20 | ≤0.20 | ≤0.20 | ≤0.06 | ≤0.04 | 24-28 | ≤0.50 | 4-6 | -- |
Cr26Ni12 | 0.2-0.5 | ≤0.20 | ≤0.20 | ≤0.06 | ≤0.04 | 24-28 | ≤0.50 | 11-14 | -- |
Cr25Ni20Mo | 0.35-0.45 | ≤0.20 | ≤0.20 | ≤0.06 | ≤0.04 | 23-27 | 1.1-1.4 | 19-22 | -- |
Cr15Mo2 | 2-2.8 | ≤0.10 | 0.5-1.0 | ≤0.10 | ≤0.06 | 13-18 | 1.5-2.5 | 0-1.0 | 0-1.2 |
Cr20Mo2Cu | 2-3.0 | ≤0.10 | 0.5-1.0 | ≤0.10 | ≤0.06 | 18-22 | 1.5-2.5 | 0-1.0 | 0.8-1.2 |
Cr26Mn | 2-3.0 | ≤0.10 | 0.5-1.0 | ≤0.10 | ≤0.06 | 23-28 | 0-1.5 | 0-2.0 | 0.8-1.2 |
Remark: we can make any other type of alloy materials for customized. | |||||||||
| #2 Product Physical Technical: | |||||
ITEM | Yield strength Yp0.2 / MPa | Tensile Strength Rm / MPa | Impact absorption KU2 /J | Hardness HBW | Micro -structure |
Mn13Cr2 | ≥ 390 | ≥ 735 | ≥ 96 | ≤ 300 | A + C |
Mn13Cr2Mo | ≥ 390 | ≥ 735 | ≥ 96 | ≤ 300 | A + C |
Mn13Cr2Ni3 | ≥ 370 | ≥ 705 | ≥ 118 | ≤ 300 | A + C |
Mn18Cr2 | ≥ 390 | ≥ 735 | ≥ 96 | ≤ 300 | A + C |
Cr26Ni5 | ɑ ɓ(MPa) 590 | A + F | |||
Cr26Ni12 | ɑ ɓ(MPa) 490 | A + F | |||
Cr25Ni20Mo | ɑ ɓ(MPa) 490 | A + F | |||
Cr15Mo2 | HRC ≥ 53 | M+ A + C | |||
Cr20Mo2Cu | HRC ≥ 58 | M+ A + C | |||
Cr26Mn | HRC ≥ 55 | M+ A + C | |||
M= Martensite ; C= Carbide ; A= Austenitic ; F= Ferritic ; | |||||
Remark: we can make any other special mechanical properties for customized | |||||
Product Uses
>Product Application
Used for Mineral processing plant in Mining such as Copper / Gold ore etc.
>Product design & uses
How to choose correct alloy material and shape to reduce production cost?
1.Fit the existing Classifier to choose blades material
This blanes is made of a new high-quality Cr-Mn alloy steel composite casting, its service life is better than other kind steel.
2.Fit the RCM to choose the liner thickness size
The RCM ( reliability-centered maintenance) time of Spiral Classifier Blades become loner, the blades Alloy steel abrasion resistant should be increased. However, the abrasion resistant increased, This blades alloy material will be more expensive, so the blades purchased cost will rised.
3.Design better shape of blades
The better shape of blades will help classifier have more effective working, increased the production capaciy and quality!
NGZR can help customer to Research & Develop the wear-parts shape for existing spiral classifier machiery.
Video
>Product Processing Video
FAQ
>FAQ
How to get a commerical offer ?
Please send your classifier blades details (Machinery specifications / wear- parts drawing ) and purchase quantity to us, we will send the commerical offer to you by E-mail within 3 working days .
How to place an trial order if we have not wear-part drawing ?
Please contact with us, NGZR will arrange a Service Engineer contact with you, then we will draw the dimensions drawing and send to you approved. After you approved the drawing, we can confrim the order and arrange to produce.
What is your MOQ ?
For the Blanes, MOQ is 1000 kgs per each shipment.
What is your order Lead-time ?
The order lead-time is 30-60 days after get deposit;
What is your payment term ?
1. 30% T/T in advance, balance T/T before shipment ;
2. O/A 30- 180 days;
What is your price term ?
We can do price term as below:
#1 EXW factory, including VAT tax;
#2 FOB Shanghai / Ningbo Port;
#3 CIF Port of delivery;
#4 DAP place of delivery;
Do you provide the Installation Service?
Yes, we provide the Installation Service，we can arrange a Service Engineer team to your workshop to install, but this service need you pay all charge of this instal service..
And also we provide the Installation Guide by video / phone with free (didn’t arrived to your workshop).
Do you provide the guarantee of useful life time?
We can guarantee the time of this classifier blades useful life, this will mark on contract.
