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Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

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Sulphuric Acid on the Web

Introduction
General
Equipment Suppliers
Contractor

Instrumentation
Industry News
Maintenance
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Used Plants
Intellectual Propoerty
Acid Plant Database
Market Information
Library

Technical Manual

Introduction
General

Definitions
Instrumentation
Plant Safety
Metallurgial Processes
Metallurgical
Sulphur Burning
Acid Regeneration
Lead Chamber
Technology
Gas Cleaning
Contact
Strong Acid
Acid Storage
Loading/Unloading

Transportation
Sulphur Systems
Liquid SO2
Boiler Feed Water
Steam Systems

Cooling Water
Effluent Treatment
Utilities
Construction
Maintenance
Inspection
Analytical Procedures
Materials of Construction
Corrosion
Properties
Vendor Data

DKL Engineering, Inc.

Handbook of Sulphuric Acid Manufacturing
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Preface
Contents
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Sulphuric Acid Decolourization
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Preface
Table of Contents

Process Engineering Data Sheets - PEDS
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Introduction

Bibliography of Sulphuric Acid Technology
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Preface
Contents

Sulphuric Acid Plant Specifications
 

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Acid Plant Database January 6, 2011

Owner Teck Cominco Limited

Teck-Logo.gif (1990 bytes)
Teck-Cominco-Logo.gif (5975 bytes)

Location P.O. Box 1000
25 Aldridge Avenue
Trail, British Columbia
Canada V1R 4L8
Background Formerly
The Consolidated Mining and Smelting Company of Canada
1996 - Company name changed to Cominco Limited
2001 - Teck and Cominco merge
Website www.teck.com
www.teckcominco.com
Plant No. 7 Acid Plant No. 8 Acid Plant No. 9 Acid Plant
Coordinates* 49º 6' 7" N, 117º 43' 14" W 49º 6' 4" N, 117º 43' 11" W 49º 6' 5" N, 117º 43' 13" W
Type of Plant Metallurgical Metallurgical Metallurgical
Gas Source Zinc - Roasters (2)
Lead - Kivcet
Plant Capacity 350 MTPD 460 MTPD 581 MTPD
SA/DA 3 SA 3 SA 3 SA
Status Operating Operating Operating
Year Built - - 1972
Technology MECS MECS MECS
Contractor - - -
Equipment

Blower
Supplier: Allis-Chalmers
Delivery Year:
Model: D30LR
Quantity: 1
Flow Rate: 46000 CFM
Pressure Rise: 3.58 psi (99" WC)
Driver: 865 Hp, Electric Motor

Blower
Supplier: Roots
Delivery Year:
Model: 42" OIB
Quantity: 1
Flow Rate: 53500 CFM
Pressure Rise: 4.505 psi (125" WC)
Driver: 1270 Hp, Electric Motor

Blower
Supplier: Allis-Chalmers
Delivery Year:
Model: D24JR
Quantity: 1
Flow Rate: 40000 CFM
Pressure Rise: 6.386 psi (177" WC)
Driver: 1315 Hp, Electric Motor

Remarks -

2006 - Original converter replaced with a SS converter designed and supplied by Chemetics

-
Gas cleaning system with a Boliden mercury removal system is common to all acid plants.  Acid plant tailgas is treated in an ammonia scrubber.  Liquid SO2 is produced by acidulation of the scrubber bleed.

NOx
Bulk acid treated with sulfamic acid and hydrogen peroxide as per US Patent
5955050

Pictures
  Teck-Cominco-AP8b.JPG (64256 bytes) -
General In smelting and refining, Teck Cominco Metals owns and operates the integrated smelting and refining complex at Trail, British Columbia. The complex’s major products are refined zinc and lead. It also produces silver, gold, germanium dioxide, indium, cadmium and copper compounds as metal co-products, along with a variety of sulphur products and ammonium sulphate fertilizers.

Cominco started in 1906 as The Consolidated Mining and Smelting Company of Canada, formed by the amalgamation of several units controlled by the Canadian Pacific Railway. The company changed its name to Cominco in 1966. Cominco's core Sullivan mine, which began production in 1909, would operate for more than 90 years until its ore reserves were exhausted in 2001.
Teck began as The Teck-Hughes Gold Mines Limited in 1913, to develop a gold discovery by prospectors Sandy McIntyre and James Hughes at Kirkland Lake. The Teck-Hughes mine was in production for 50 years until 1965. Teck purchased the Beaverdell mine in 1969. This silver mine was first explored in 1898 and was in production until 1991.
The association between Teck and Cominco began in 1986, when Teck and two industry partners acquired a shareholding from CP Limited. Teck and Cominco merged in July 2001.
The company’s legal name will remain “Teck Cominco Limited” until the next Annual General Meeting in April 2009. At that AGM, subject to the approval of shareholders, the company proposes to change the legal name to “Teck Resources Limited”. However, effective immediately, the brand of the company will be simply “Teck”.

References -
News March 16, 2010 - The Insurance Corporation of B.C. will destroy 18 vehicles belonging to employees of Teck Resources at the company's operations in Trail, B.C., after damage resulted from a sulphuric acid spill in January.  The acid spilled from a line that runs between the Trail and Warfield plants on Jan. 8 and emptied into a staff parking lot.   ``We couldn't predict the long-term effects so we can't guarantee safety,'' said ICBC spokeswoman Michelle Hargrave.   The leak affected 22 vehicles, each of which received new tires from Teck Resources. But ICBC has determined that's not enough for 18 of the vehicles.  “Customers were advised the vehicles would be crushed so that no affected parts from the vehicles could later enter the used parts market or end up in a repaired or rebuilt vehicle,” Hargrave said in an email.  The 18 clients are being compensated by ICBC, which is seeking to recover its costs from Teck Resources.   Hargrave could not say how much money is being awarded or the compensation amount ICBC is seeking, but said the corporation is in negotiations with the company.  The Teck employees' insurance premiums will not be affected.  A car that had the least contact with the acid is being returned to an employee who owned it because the vehicle was determined to be safe to operate.  The three additional damaged vehicles did not have comprehensive coverage with ICBC and their owners are not being compensated by the public insurer. Comprehensive coverage is optional and open to private competition in B.C.   Teck public affairs manager Richard Deane said he can't speak about individual employees' insurance arrangements but the company is continuing to work with those who've been affected by the spill.

October 19, 2009 - A contract employee was burnt with acid from a sulfuric acid drain line during a routine shutdown of the roaster acid area of Teck’s Trail operation on Oct. 19.  The contractor was treated for burns and released the same day at the Kootenay Boundary Regional Hospital (KBRH).  “We were in the midst of a planned shutdown of this area that began Oct. 17 and will run until Oct. 29,” said Carol Vanelli-Worosz, public relations for Teck’s Trail operation.  “We know he was discharged from the KBRH on the same day, but because he wasn’t our employee I have no further detailed information.”  Vanelli-Worosz said the shutdown isn’t anything out of the ordinary for Teck and about 120 contract employees would be coming and going on site during the maintenance.  She says an investigation is underway involving Teck, Work safe B.C. and Trail’s Local 480 United Steel-Workers Union.   “We are committed to everyone leaving our worksite safely everyday and we take these incidents very seriously,” said Vanelli-Worosz.  “There is now an investigation into the route causes of the incident to ensure it does not happen again.”

July 30, 2009 - Teck Resources Ltd. said it will resume full production at its Trail, B.C., zinc smelter due to recovering demand for the metal.   The company, Canada's largest base metals miner and a top producer of coal used in the steelmaking process, also said it has reached agreement with most of its coal customers on 2009 deliveries at $128 (U.S.) a tonne.  This brings its average realized coal price for the 2009 calendar year to between $155 and $160 a tonne, when factoring in coal sold early in the year at higher 2008 prices.  Teck slashed output at Trail by 20 per cent last fall as a result of plunging demand. It said it will raise output to 25,000 tonnes a month effective Sept. 1. The smelter had been operating at a rate of 20,000 tonnes a month. Mined zinc production will not be affected.  Teck said a strengthening in customer demand over the past several months has depleted refined metal inventories.

October 1, 2008 - Teck Cominco Limited (Teck) is pleased to announce the launch of its simplified name and brand, Teck, and the formation of five new strategic business units specializing in copper, metallurgical coal, zinc, gold and energy.  “Seven years ago when Teck Cominco was formed, two strong Canadian companies with a tradition of excellence in mining and metal refining were brought together. Since then, we’ve grown stronger through the acquisition and development of a diversified range of commodities,” said Don Lindsay, President and CEO. “Today, under one simplified name and a new strategic business unit structure, Teck is well positioned to build on our strength as a diversified resource leader.”  The new structure is designed to improve the company’s competitiveness by increasing Teck’s ability to analyze and act on available opportunities in each commodity segment. Each business unit is led by a senior executive with full responsibility for the unit’s performance including establishing a growth strategy, project identification and development, the safe and sustainable operation of the unit’s assets, delivering quality products to customers, and overall profit and loss accountability.

April 30, 2001 - The Boards of Directors of Teck Corporation and Cominco Ltd. are pleased to announce today that the two companies have entered into a merger agreement.  The ongoing company will be named Teck Cominco Limited, preserving the two most historic names in Canadian mining, with over 180 years of operating history between them.  Under the merger agreement, implementation of which is subject to regulatory, court and Cominco shareholder approvals and other customary conditions, Cominco shareholders will receive 1.8 Class B subordinate voting shares of Teck plus $6 in cash for each Cominco common share held. This represents a premium to Cominco shareholders of 21% over the average closing prices of the two companies in the 20 trading days prior to this announcement.  Dr. Norman B. Keevil, Chairman and CEO of Teck and Chairman of Cominco, stated: "The merger will result in a substantial, diversified, mining company with a larger market capitalization and much greater liquidity than either of the predecessors. The new Teck Cominco will have strong cash flow from world-class assets. The combined company's exceptional pipeline of expansion and development projects will fuel its ongoing growth. Chief among these projects are: the current expansion of capacity at the Red Dog zinc mine; the nearly-completed Antamina copper, zinc mine; the planned expansions of the Cajamarquilla zinc refinery and the Elkview coal mine; and the Pogo gold and San Nicolas copper, zinc projects currently at the feasibility study stage."  Dr. Keevil pointed to the trend towards consolidation in the mining industry to create stronger, more competitive companies, with the recently announced merger of BHP and Billiton being just the latest example.  He said: "With consolidation occurring across country borders around the world, it is only logical that two related companies based in the same city, with a number of joint operations and a significant proportion of common shareholders, join forces to become more competitive in the world mining industry."

MTPD - Metric Tonne per Day           STPD - Short Ton per Day
MTPA - Metric Tonne per Annum      STPA - Short Ton per Annum
SA - Single Absorption
DA - Double Absorption
 

* Coordinates can be used to locate plant on Google Earth