マレーシアのドロマイトポータブルクラッシングプラント

Summary: この記事は、このプロジェクトの詳細について掘り下げています。マレーシア産ドロマイトの特性、現場での粉砕の課題、NKポータブルクラッシャープラントの構成と技術的な利点、そして統合ソリューションによってもたらされる実践的なメリットなどについて説明しています。

ドロマイトはカルシウムマグネシウム炭酸塩（CaMg(CO₃)₂）からなる炭酸塩鉱物で、建設、農業、ガラス製造、金属産業に広く使用される多用途の原料です。マレーシアは豊富なドロマイトの埋蔵量に恵まれており、高速道路建設、都市鉄道輸送、不動産プロジェクトを含むインフラセクターの急速な発展の中で、高品質なドロマイト骨材に対する需要が高まっています。

To meet the market’s stringent requirements for dolomite aggregate quality and production efficiency, a leading Malaysian mining company partnered with SBM to deploy an advanced mobile dolomite crushing production line. This turnkey solution has achieved remarkable success in optimizing dolomite processing, reducing operational costs, and enhancing environmental sustainability. This article delves into the details of this project, including the characteristics of Malaysian dolomite, the challenges of on-site crushing, the configuration and technical advantages of the NK portable crusher plant, and the practical benefits brought by the integrated solution.

1. プロジェクトの背景：マレーシアにおけるドロマイト資源と市場の需要

Malaysia boasts significant dolomite deposits, primarily distributed in states such as Perak, Selangor, and Johor. The dolomite in these regions is characterized by high purity (CaO content 30-35%, MgO content 20-25%), dense structure, and hardness ranging from 3 to 4 on the Mohs scale, making it an ideal raw material for producing high-strength concrete aggregates, road base materials, and flux in steelmaking. With the Malaysian government’s continuous investment in infrastructure development under the 12th Malaysia Plan (2021-2025), the demand for high-quality dolomite aggregates has increased exponentially. Traditional fixed crushing plants, however, face insurmountable challenges in meeting this demand, including high upfront investment, long construction cycles, difficulty in adapting to scattered dolomite mining sites, and high transportation costs of raw ore.

The client, a well-established Malaysian mining enterprise specializing in dolomite extraction and processing, was confronted with these pain points. Its existing fixed crushing line had low production efficiency, high energy consumption, and poor mobility, making it unable to efficiently utilize scattered dolomite resources. Moreover, the uneven particle size of the final aggregates failed to meet the quality standards for high-grade construction projects. To address these issues, the client sought a flexible, efficient, and cost-effective crushing solution. After in-depth market research and technical communication, SBM's NK portable crusher plant stood out due to its superior mobility, high crushing efficiency, and intelligent control system, ultimately becoming the core equipment for the client’s new dolomite crushing line.

2. マレーシアにおけるドロマイト現地破砕の主要な課題

The on-site crushing of dolomite in Malaysia posed several unique challenges that required a tailored technical solution. Firstly, the dolomite mining sites are widely scattered across mountainous and hilly areas, with complex terrain and poor road conditions. This demanded that the crushing equipment have excellent mobility to be easily transported and deployed to different sites without extensive infrastructure modifications. Secondly, the Malaysian climate is hot and humid, with frequent rainfall, which places high requirements on the waterproof, dustproof, and corrosion-resistant performance of the equipment. Thirdly, the client required the final dolomite aggregates to meet strict quality standards, including uniform particle size (0-5mm, 5-10mm, 10-20mm), low needle-flake content (≤10%), and high compressive strength (≥30MPa). Finally, in response to Malaysia’s increasingly stringent environmental protection regulations, the crushing line needed to minimize dust and noise pollution.

Against this backdrop, fixed crushing plants were deemed impractical due to their poor mobility and high environmental impact. In contrast, SBM’s NK portable crusher plant, with its modular design, robust structure, and advanced environmental protection systems, was well-equipped to overcome these challenges, providing a reliable solution for efficient and eco-friendly dolomite crushing.

3. コア設備構成：NKポータブルクラッシャープラントと統合システム

SBM customized a comprehensive mobile crushing line for the client based on the characteristics of Malaysian dolomite and the client’s specific requirements. The core equipment is the NK series portable crusher plant, which integrates feeding, crushing, screening, and conveying functions into a single modular unit. The entire line consists of three key components: the portable jaw crusher plant, the portable cone crusher plant, and the vibrating screen portable plant, forming a two-stage crushing and one-stage screening process. This configuration ensures high crushing efficiency, stable product quality, and flexible operation.

3.1 ポータブル・ジョークラッシャープラント（一次破砕）

主な破砕機として、ジョークラッシャープラントは、大きなドロマイト原鉱（最大供給サイズ600mm）を、二次破砕に適した小さな粒子（50-100mm）に砕く役割を担っています。このプラントは、高性能のジョークラッシャーを備えており、大きな破砕室、高い破砕率（最大6:1）、強力な破砕能力を特徴としています。ジョープレートは高クロム合金鋼で作られており、優れた耐摩耗性と長寿命を持ち、ドロマイトの硬く研磨性のある特性に適応しています。

プラントのモジュラー設計により、迅速な組み立てと分解が可能であり、全体のユニットは現場に到着してから24時間以内に展開および稼働を開始できます。さらに、このプラントには、フィードレート、粉砕圧力、モーター負荷などの主要なパラメータをリアルタイムで監視するインテリジェントコントロールシステムが備わっており、安定した効率的な運転を確保しています。

3.2 ポータブルコーンクラッシャープラント（セカンダリークラッシング）

二次破砕段階は、最終的なドロマイト骨材の粒径と形状を確保するために非常に重要です。ポータブルコーンクラッシャーは、油圧調整システムと多気筒構造を採用しており、排出粒度の正確な制御が可能です。コーンクラッシャーは、独特の破砕腔設計（中粒破砕用の標準腔）を備えており、破砕された製品の粒子径が均一で、針状・薄片状含有量が低く、建設用骨材の高品質要件を満たしています。

それは、水噴霧装置と防塵カバーを含む粉塵抑制システムを備えており、破砕過程での粉塵排出を効果的に抑えます。コーンクラッシャーのインテリジェント制御システムは、 jaw crusher のものとシームレスに接続されており、一次破砕と二次破砕の段階間で協調運転が可能です。オペレーターは集中制御パネルを通じて、両方のプラントの供給速度と排出粒度を調整でき、運転効率の向上と労働強度の軽減を図ります。

3.3 ポータブルスクリーンプラント（ふるい分けと分類）

After secondary crushing, the dolomite particles are sent to the vibrating screen for screening and classification. This plant is equipped with a 3-layer circular vibrating screen with a screen area of 18㎡ (1800×6000mm), which can efficiently separate the crushed products into three specifications: 0-5mm (fine aggregate), 5-10mm (medium aggregate), and 10-20mm (coarse aggregate). The vibrating screen adopts a high-frequency vibration motor, which has strong screening capacity and high screening efficiency (≥95%), ensuring that the final products meet the required particle size standards.

スクリーンメッシュは高耐摩耗性のポリウレタン材料で作られており、長い耐用年数を持ち、交換も簡単です。このプラントには、分類された骨材を対応する製品ストックに輸送するコンベヤーベルトシステムも装備されています。全体のスクリーニングおよび輸送プロセスは完全に自動化されており、手動介入を減らし、生産効率を向上させています。

3.4 補助機器およびシステム

To ensure the smooth operation of the entire mobile crushing line, SBM also provided a series of auxiliary equipment and systems, including a vibrating feeder (to ensure uniform feeding of raw ore), a belt conveyor (for material transportation between different plants), a diesel generator set (for emergency power supply), and an integrated control room (for centralized monitoring and operation of the entire line). Additionally, the line is equipped with a comprehensive environmental protection system, including dust suppression (water spray + dust collector), noise reduction (sound insulation cover for motors), and wastewater treatment (sedimentation tank for recycling water), fully complying with Malaysia’s environmental protection regulations.

4. ドロマイト破砕におけるNKポータブルクラッシャープラントの技術的利点

The NK portable crusher plant deployed in the Malaysian dolomite project boasts several core technical advantages that distinguish it from traditional crushing equipment and competitors’ products, ensuring efficient, stable, and eco-friendly operation.

4.1 優れた機動性と柔軟性

NK mobile crushers can adapt to various complex terrains, including mountainous areas, muddy roads, and uneven ground. The self-propelled units allows the plant to move freely between different mining sites without the need for cranes or other heavy equipment, significantly reducing the time and cost of equipment transportation and deployment. For the client’s scattered dolomite mining sites, this mobility means that the crushing line can be quickly relocated to utilize raw ore resources in different areas, maximizing resource utilization and reducing transportation costs of raw ore.

4.2 高い破砕効率と安定した性能

The NK series portable crusher plants are equipped with high-performance crushing equipment (jaw crusher and cone crusher) with optimized structures and strong power systems. The primary crushing plant has a maximum production capacity of 200t/h, while the secondary crushing plant can process up to 150t/h. The entire line’s designed production capacity is 120-150t/h, which is 30% higher than the client’s previous fixed crushing line. The hydraulic adjustment system of the cone crusher ensures precise control of the discharge particle size, with a deviation of ≤2mm, ensuring uniform product quality. Moreover, the equipment is made of high-strength steel and wear-resistant materials, which can withstand the harsh operating conditions of hot and humid climates in Malaysia, ensuring long-term stable operation with a low failure rate (average failure rate ≤2% per month).

4.3 インテリジェントコントロールと簡単操作

全体のモバイルクラッシングラインは、高度なインテリジェント制御システムを採用しており、PLC制御、タッチスクリーン操作、リモート監視機能を統合しています。オペレーターは、集中制御パネルを通じて、フィードレート、クラッシング圧力、モーター温度、排出粒度などの重要なパラメーターをリアルタイムで監視できます。このシステムには、自動故障診断とアラーム機能も備わっており、設備の故障を迅速に検出し、メンテナンス担当者に通知することで、ダウンタイムを削減します。さらに、このシステムはリモート操作と監視をサポートしており、管理者がオフィスから生産状況や設備運用を把握できるため、管理効率が向上します。制御システムのユーザーフレンドリーなインターフェースにより、オペレーターは容易に学習し操作できるため、専門的なスキルの要件が減少し、労働コストも低下します。

4.4 優れた環境保護性能

In response to Malaysia’s strict environmental protection regulations, the NK portable crusher plant is equipped with a comprehensive environmental protection system. The dust suppression system, consisting of water spray devices installed at the feed port, discharge port, and conveyor belt, effectively reduces dust emissions by more than 90%. For fine dust that cannot be completely removed by water spray, a bag-type dust collector is installed, ensuring that the dust concentration at the work site is ≤10mg/m³, which is far below Malaysia’s national standard of 50mg/m³. The noise reduction system, including sound insulation covers for motors and crushers, reduces the noise level at the work site to ≤75dB(A), protecting the health of operators. The wastewater treatment system collects and treats the water used for dust suppression, with the treated water reused for dust suppression, realizing zero discharge of wastewater and saving water resources.

4.5 コスト効果が高く、高い投資収益率

Compared with traditional fixed crushing plants, the NK portable crusher plant has significant cost advantages. Firstly, the upfront investment of the mobile crushing line is 40% lower than that of a fixed plant of the same capacity, as it does not require extensive civil engineering such as foundation construction. Secondly, the mobile line’s mobility reduces the transportation cost of raw ore by 50%, as the equipment can be deployed directly at the mining site, eliminating the need to transport large raw ore to a fixed plant. Thirdly, the intelligent control system and high equipment reliability reduce labor costs by 30% and maintenance costs by 25%, respectively.

5. プロジェクト運営成果とクライアントの利点

稼働開始以来、NKポータブルクラッシャープラントを装備したドロマイト破砕ラインは、長期間にわたり安定した運転を維持し、クライアントに大きな経済的および社会的利益をもたらしています。主要な運転結果は以下の通りです。

• 生産効率： The actual production capacity of the line is significantly higher than the client’s previous fixed crushing equipment, enabling the client to achieve high annual output of high-quality dolomite aggregates and fully meet the supply needs of major local construction projects.
• 製品の品質： 最終的なドロマイト骨材は均一な粒子サイズと優れた物理特性を備えており、高グレードコンクリートおよび道路基盤材の品質基準を完全に満たしています。製品の合格率が大幅に向上し、クライアントは市場での明確な競争優位を獲得し、製品の販売を促進し、製品価値を高めることができました。
• 運用コスト: The line effectively reduces unit energy consumption, labor costs and maintenance costs. The significant annual cost savings have greatly improved the client’s profitability.
• 環境パフォーマンス： 作業現場のほこりと騒音レベルは適切に管理されており、地元の環境保護規制を完全に満たしています。顧客は優れた結果で環境検査に合格し、潜在的な環境リスクを回避し、環境責任の面で企業イメージを向上させました。
• 移動性と柔軟性： 移動式破砕ラインは、異なる鉱山サイトに迅速に移動できるため、鉱石資源の利用率が大幅に向上します。また、クライアントが以前は固定式破砕設備ではアクセスできなかった新しい鉱山エリアを開発できるようになり、さらにビジネスの範囲と市場シェアを拡大することができます。

The client’s project manager commented: “SBM’s NK portable crusher plant has comprehensively optimized our dolomite processing operations. Its outstanding mobility, operational efficiency and environmental performance have exceeded our expectations. The high-quality aggregates produced by the line have helped us secure contracts for multiple key infrastructure projects, and the cost savings have effectively enhanced our profitability. We are very satisfied with this cooperation and look forward to further collaboration with SBM on future projects.”

6. Application Prospects of NK ポータブルクラッシャー Plant in Malaysia’s 採掘 Industry

Malaysia’s mining industry, including dolomite, limestone, granite, and iron ore mining, is poised for significant growth driven by the country’s infrastructure development and industrialization. The challenges of scattered mining sites, complex terrain, and strict environmental regulations make mobile crushing solutions an ideal choice for Malaysian mining enterprises. SBM’s NK portable crusher plant, with its superior performance and tailored solutions, has broad application prospects in Malaysia’s mining industry.

In addition to dolomite, the NK portable crusher plant can also be used for crushing other minerals such as limestone, granite, and basalt, as well as construction waste recycling. Its modular design allows for flexible configuration according to different mineral characteristics and production requirements, providing customized solutions for various applications. With the continuous advancement of intelligent and environmental protection technologies, SBM will continue to optimize the NK series portable crusher plants, enhancing their performance, reducing energy consumption, and improving user experience, to better serve the needs of the Malaysian mining industry and contribute to the country’s sustainable development.