In the domestic metal mineral deposits with proven resource reserves，As a whole, there are many small deposits.、There are many lean ores and associated ores、Low degree of control, etc.，Comprehensive development and utilization is difficult.，It has high requirements for mining and dressing technology of mine development.。At the same time, more and more attention is being paid to environmental protection.，The regulatory measures for mining are also becoming more and more stringent.。How to deal with such a general trend?，Effectively reduce costs and increase efficiency through innovative ways，It has always been an important issue in the operation of metal mining and dressing.。

A large metal mine in Yunnan，Several sets of Kelei mobile crushing and screening equipment are adopted.，It is attributed to the flexibility of Kelei equipment.、The advantage of stable and high yield，The problem of production bottleneck of the original fixed line in the mine is solved.，By increasing production and transportation efficiency、Improve the ore grade、Realize the reuse of tailings and other means.，It has brought an effective solution for the mine to reduce costs and increase efficiency.。This successful application case also has important enlightening significance for other metal mining enterprises to find new ways to sustain growth.。

Project overview

The metal mine is located in Yunnan Province at an altitude of 2700.-2,900m plateau area，Large mining area，The regional working conditions are relatively complex.。With the development of enterprises，There is already a bottleneck in the fixed line processing capacity of the mine.，Inability to meet the requirements of the concentrator for output。The coarse breaking link of the fixed line has a daily average of 2000-A gap of 3,000 tons，However, the solution of new fixed line is complicated in site selection and approval procedures.，Long construction period、Difficulties of large investment。If you choose to move the line，Put into production quickly，But can we meet expectations in terms of production and reliability?，The mine also has doubts.。Compared to other materials，Metal mineral aggregate has large abrasion on crushing equipment，High requirements for the durability and crushing capacity of the equipment。

Out of time、Benefit、Comprehensive consideration of cost，After many investigations, the mine，Kelei mobile crushing and screening equipment is selected.。It turns out，Kelei equipment in production、Processing quality、Performance in terms of usability and reliability，Fully meet the high standard requirements of the mine，It not only effectively makes up for the gap of the coarse breaking capacity of the fixed line,，It is also a huge amount of material storage and processing for the mining area with a relatively low grade of tens of millions of tons.、And an innovative solution has been found for the treatment of associated limestone tailings.，Help the future benefits of the mine continue to improve。

List of site information

Construction application1：Crushing and blasting mineral aggregate 

Use the equipment：Kelei mobile jaw crushing equipment MC 120 PRO

Raw materials：Ore after blasting 0-600 mm

Finished product | Material used for

0-300 mm Mixing：Used for smelting after fine crushing

Construction application2：Metal ore sieving，Ore fines are mined for the smelter

Use the equipment：Kelei Mobile Heavy Screening Equipment MSS 802i EVO

Raw materials：Lower grade stock  0-500 mm

Finished product | Material used for

0-25 mm ：Ore powder is directly smelted

25-35 mm ：Smelting after fine crushing

35+ mm ：To be used after coarse crushing

Construction application 3：Reuse of associated minerals

Use the equipment：Ke Lei counterattacked and broke. MR 130 ZS EVO 2 +Mobile finished product screen  MSC 953 EVO

Raw materials：Limestone 0-600 mm

Finished product | Material used for

0-5 mm, 5-10 mm ：Mixing cement concrete

10-20 mm, 20-31.5 mm ：Road base material

Multiple tapping potential Effectively increase income

Effectively expand production capacity。In the face of a fixed crush line 2000-3000 tons/When the sky breaks the gap.，After repeated comparison, the project side，The final choice is the Krei Jaw Crusher. MC 120  PRO Mobile production scheme for coarse crushing of blasted mineral aggregate，Its production capacity can reach 400 tons./Hours or more，Quickly and effectively make up for the capacity gap。In 2021, the annual output reached 400000 tons.，Become a quality partner for the fixed line of the mine。In addition，This one MC 120 PRO It can also be used as an emergency plan for fixed fault shutdown or maintenance.，Ensure sustained productivity of the enterprise。

Store materials to improve taste。Restricted by the technology and cost of mineral material smelting and processing，In many mines, relatively low-grade metal ores are first stored for disposal.。Procurement of mobile heavy duty screening machine in Kelei MSS 802i EVO Before，The mine has stockpiled tens of millions of tons.，Metallic ore raw materials with relatively low grade and limited smelting value。Nowadays，Adopt MSS 802i EVO Direct screening of stored material，Separated material No.1（0-25 mm）Can be directly used for refining as a finished product，The crushing link is omitted；Material No.2（25-35 mm）It can also be used for refining after fine crushing in cone crusher or ball mill.；Material No.3（35 mm Above）It is left for further processing in the future。After such cooperative processing,，The utilization rate of this batch of stored materials can be increased to 80% Above，Significantly improved ore grade and processing efficiency，The economic benefit is obvious。

Solid waste regeneration generates income。Like most mines in the country.，The mine where the project party is located belongs to the category of associated ore minerals.，The metallic minerals are covered with limestone.，After mining and stripping, the remaining volume is huge.。For metal mines，These limestones are of low economic value.，If it is not used, it will become solid waste.，It also needs to be properly disposed of through landfill and other means at a cost.。For this reason，The project side is investigating.、After the trial，Purchased Clay to fight back. MR 130 ZS EVO 2 and Mobile Screener MSC 953 EVO ，A crushing and screening line for processing limestone has been set up.，Four kinds of high-quality aggregates with different particle sizes are produced.，Can be used for road maintenance in the mining area，It saves costs for enterprises.；The fine material part can be used as raw material for processing cement concrete.，Or export for market-oriented operation。Turn waste into treasure，So that that income of the enterprise is increase。

“Especially in 2020 and 2021.，We have a large internal demand for sand and gravel.，The demand for aggregates in the external market is also very large.，This set is efficient、The stable moving line has made a great contribution.。”The person in charge of the project said.。

Flexible layout There is a way to lower the cost

Compared to a fixed production line on a mine site，The outstanding advantage of Kelei crushing and screening equipment is that it can move by itself.，They can be laid out for production close to the working face as required，Thereby reducing the cost of ore reshipment.。“

“We're using Clay's mobile jaw. MC 120 PRO After，0 after blasting can be crushed nearby-600 mm Large size ore，Processed 300 mm Mixture with particle size within，The shape is regular，It can effectively improve the volume utilization rate of trucks.，Safer transportation，And the unit transportation cost is lower.。”The project manager said。”

In fact，MC 120 PRO It also has the option of both oil and electricity.，Electricity can also be selected as the power source according to the needs of the project.，It can bring lower equipment operating costs to customers.。

Efficient operation Stable and reliable

For mine customers，Time is benefit.，Therefore, can the mobile equipment operate reliably for a long time?，It is particularly important to maintain a steady high yield。And in this metal mine project,，Customers are satisfied with the ruggedness and durability of the Kelei equipment。

Kelei Mobile Counterattack Break MR 130 ZS EVO2 ，Customer purchased in 2019，At present, the construction has exceeded 9000 hours.，Average daily construction 8-9 hours；Mobile jaw crusher MC 120 PRO ，The delivery will be completed in 2021.，High utilization rate of equipment，Work in double shifts every day，The running time is about 20 hours.，At present, the cumulative working hours are close to 7000 hours.；Mobile heavy duty screening machine MSS 802i EVO ，Purchased in 2023，Daily construction 8-Nine hours……Roup of elapsed time data，All show the stability and reliability of Kelei equipment.。

Safe production The operation is convenient

Mine construction，Safety cannot be ignored，Clei devices can be easily interconnected via intelligent electrical interlocks，The safety of the equipment can be effectively improved.；At the same time，When the user encounters an emergency,，The emergency stop button of the interlock device can be pressed，All equipment can be safely stopped。And all related functions can be controlled within a safe distance.，The construction safety is obviously improved.。

Full security at the same time，The convenient operation of Kelei equipment is also surprising.， SPECTIVE The control system is simple、Intuitive control panel makes it easier for users、Accurately operate the control system and set relevant parameters，Full of humanity。

Talking about the role and significance of Kelei mobile crushing and screening equipment in the operation of metal mines，The project manager said：“For small and medium-sized metal mines，Consider the profit balance point.、Early investment、Site selection requirements、Comprehensive haul distance、Examination and approval, etc，It is more appropriate to choose this high-end brand of mobile crushing and screening equipment.，Can meet the expected requirements in terms of yield and durability，And this kind of moving line can also be sold twice.，The investment risk is effectively reduced.；For large metal mines,，Good mobile crushing and screening equipment can also be used as an auxiliary scheme to help efficient production.。”

Professional services Have no worries

Wirtgen China and authorized agents to set up a service support team in Kelei.，Its service timeliness and service quality also make the person in charge of the project deeply satisfied.：“The service team has 4 every year.-5 return visits，Be able to communicate at any time when there are problems in daily use.、Solve in time，The service engineer is very professional.，Keep our equipment running without worry。”