If you have ever worked in a quarry, you know that diabase is not your average rock. As a basic shallow intrusive rock (often grouped with basalts and subvolcanic rocks), diabase is incredibly dense, highly wear-resistant, and famously anti-corrosive. Sitting at a 6.5 to 7 on the Mohs hardness scale with a compressive strength of 160–180 MPa, it’s a premium material for construction stone, industrial raw materials, and metallurgical additives.

But here is the reality check: trying to process diabase with the wrong crushing equipment is a fast track to shredded wear parts and blown budgets. Because it's so abrasive, standard impact crushers just won't cut it. You need specialized, heavy-duty machinery.

Let's break down the exact equipment you need to profitably turn raw diabase into high-quality aggregate, and what you should expect to pay for it.

What is the Best Equipment for Crushing Diabase?

Given the specific structural hardness of diabase, your crushing line must rely on the principle of compression crushing. For this, the undisputed champions of the quarry are the Jaw Crusher and the Cone Crusher. Depending on your required yield, output size, and site conditions, here is how the top-tier models from Liming Heavy Industry stack up.

1. The Primary Breaker: Jaw Crusher

Every piece of diabase has to go through a jaw crusher first. It uses the periodic squeezing motion between a stationary and a moving jaw plate to shatter massive boulders. For hard rocks, we highly recommend our premium C6X Series Jaw Crushers.

  • Max Feed Size: Up to 1200 mm (e.g., C6X200).
  • Processing Capacity: Highly scalable, ranging from 80 t/h up to a massive 1510 t/h.
  • Design Upgrades: The deep "V-shaped" crushing cavity eliminates dead zones, significantly boosting your daily yield and ensuring a massive crushing ratio.
  • Durability: Built with high-manganese steel jaw plates that absorb the extreme wear of diabase, keeping your maintenance costs down while saving 15%-30% on energy.
  • Smart Adjustments: Employs a dual-wedge adjusting device for the discharge opening, making it simple to control your final particle size. Plus, the integrated motor base saves valuable installation footprint.
Heavy-duty Liming C6X series Jaw Crusher processing large diabase boulders at a quarry
The C6X Series Jaw Crusher handles massive diabase boulders up to 1200mm, setting the stage for efficient secondary crushing.

2. The Secondary Finisher: Cone Crusher

Once the diabase is broken down by the jaw crusher, it gets conveyed to the cone crusher. Utilizing lamination crushing (rock-on-rock compression between a moving and fixed cone), this machine is purpose-built for hard rocks. Our HST Single-Cylinder and HPT Multi-Cylinder Cone Crushers are the industry benchmarks for this stage.

  • Max Feed Size: Up to 560 mm (e.g., HST450).
  • Processing Capacity: From 27 t/h all the way up to 2130 t/h (e.g., HST750), depending on the model.
  • Output Quality: The lamination principle ensures a very high ratio of fine, cubic aggregate, which is exactly what concrete and asphalt plants want to buy.
  • Intelligent Control: Fully integrated with a PLC smart system, allowing operators to monitor pressure and adjust the discharge opening in real-time from a control room.
  • Protection Systems: Features advanced labyrinth sealing technology to prevent abrasive rock dust from contaminating the lubricating oil, drastically extending the life of your internal bearings and wear parts.
HST Single-Cylinder Hydraulic Cone Crusher producing fine construction aggregates from hard rock
Equipped with a smart PLC control system, the HST Cone Crusher precisely shapes hard diabase into high-value construction aggregates.

How Much Does a Diabase Crushing Machine Cost?

You’re likely wondering about the bottom line. Because diabase requires premium, high-strength steel machinery, the price bracket is fairly wide. Depending on the capacity and specific model you choose, a single crusher will generally range from tens of thousands to several hundred thousand dollars (USD).

Why such a big gap? It comes down to a few factors:

  • Capacity & Size: A 100 t/h jaw crusher naturally costs a fraction of a 1000 t/h heavy-duty model.
  • Manufacturing Quality: The grade of steel used for the wear parts and main frame directly impacts the price—and dictates whether the machine will last 10 years or 10 months.
  • Supplier Choice: Buying from a third-party trader means you are paying hidden markups. Going direct to a primary manufacturer gives you factory pricing and actual warranties.

Need an Exact Quote for Your Quarry?

Liming Heavy Industry has been dominating the global mining machinery sector for over 40 years. We control every step of the process—from sourcing raw materials to final factory testing. When you partner with us, you get factory-direct pricing, massive multi-tier discounts, and zero middleman interference.

We don't just sell equipment; our project managers provide one-on-one service. We will design your site layout, install the equipment, train your operators, and handle the long-term maintenance. Contact us online today to get a detailed equipment list and an exact price quote tailored to your diabase crushing project!