Primary Jaw Crusher or Primary Impact Crusher?

Choosing the Right Primary Crusher for Aggregate Production

Introduction

Many factors influence the choice of a primary crusher in aggregate production. This article first reviews the working principles, force analyses, capacity and power calculations of the two main primary crusher types — the primary jaw crusher and the primary impact crusher — and then discusses the criteria that should guide the selection between them when designing a crushing and screening plant. Particularly in concrete and road aggregate production, the choice between a primary jaw crusher and a primary impact crusher directly affects the plant's capital investment, wear-related operating costs, and final product quality.

Jaw Crusher: Working Principle, Force Analysis, and Capacity and Power Calculation

The function of any crusher is to apply a force capable of breaking the feed material. In jaw crushers, this force is a compressive force. Structurally, jaw crushers come in two configurations:

• Single toggle jaw crushers
• Double toggle jaw crushers