Grates are a component found in boilers or...Industrial FurnaceComponents for stacking solid fuel and ensuring its effective combustion. The entire grate mainly consists of two parts: the frame and the grate plates. The grate plates are typically made of cast iron, with necessary ventilation gaps maintained between the plates after assembly. Often, a regulated ventilation chamber is set beneath the grate to allow air to pass through the gaps into the fuel layer, where the ash left after the fuel is burned out can be removed manually or mechanically.