furnace-top hopper

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• Hopper — Hop per, n. [See 1st {Hop}.] 1. One who, or that which, hops. [1913 Webster] 2. A chute, box, or receptacle, usually funnel shaped with an opening at the lower part, for delivering or feeding any material, as to a machine; as, the wooden box with …   The Collaborative International Dictionary of English

• Hopper boy — Hopper Hop per, n. [See 1st {Hop}.] 1. One who, or that which, hops. [1913 Webster] 2. A chute, box, or receptacle, usually funnel shaped with an opening at the lower part, for delivering or feeding any material, as to a machine; as, the wooden… …   The Collaborative International Dictionary of English

• Hopper closet — Hopper Hop per, n. [See 1st {Hop}.] 1. One who, or that which, hops. [1913 Webster] 2. A chute, box, or receptacle, usually funnel shaped with an opening at the lower part, for delivering or feeding any material, as to a machine; as, the wooden… …   The Collaborative International Dictionary of English

• Hopper cock — Hopper Hop per, n. [See 1st {Hop}.] 1. One who, or that which, hops. [1913 Webster] 2. A chute, box, or receptacle, usually funnel shaped with an opening at the lower part, for delivering or feeding any material, as to a machine; as, the wooden… …   The Collaborative International Dictionary of English

• Bell and hopper — Hopper Hop per, n. [See 1st {Hop}.] 1. One who, or that which, hops. [1913 Webster] 2. A chute, box, or receptacle, usually funnel shaped with an opening at the lower part, for delivering or feeding any material, as to a machine; as, the wooden… …   The Collaborative International Dictionary of English

• Sand hopper — Sand Sand, n. [AS. sand; akin to D. zand, G. sand, OHG. sant, Icel. sandr, Dan. & Sw. sand, Gr. ?.] 1. Fine particles of stone, esp. of siliceous stone, but not reduced to dust; comminuted stone in the form of loose grains, which are not coherent …   The Collaborative International Dictionary of English

• bell and hopper — noun : an apparatus at the top of a blast furnace consisting of a large hopper closed by a cone which is pulled up from below by the apex and through which the charge may be introduced without escape of the gases …   Useful english dictionary

• iron processing — Introduction       use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting.       Iron (Fe) is a… …   Universalium

• Air preheater — An air preheater or air heater is a general term to describe any device designed to heat air before another process (for example, combustion in a boiler) with the primary objective of increasing the thermal efficiency of the process. They may be… …   Wikipedia

• dumping scow — Hopper Hop per, n. [See 1st {Hop}.] 1. One who, or that which, hops. [1913 Webster] 2. A chute, box, or receptacle, usually funnel shaped with an opening at the lower part, for delivering or feeding any material, as to a machine; as, the wooden… …   The Collaborative International Dictionary of English

• environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium