Reclaimed phosphate clay settling area investigation

hydrologic model calibration and ultimate clay elevation prediction, final report
  • 309 Pages
  • 0.98 MB
  • English

Florida Institute of Phosphate Research , Bartow, Fla
Clay soils -- Research -- Florida., Phosphate mines and mining -- Waste disposal., Abandoned mined lands reclamation -- Flo



StatementWalter R. Reigner ... [et al.] ; prepared for Florida Institute of Phosphate Research.
ContributionsReigner, Walter R., Florida Institute of Phosphate Research.
LC ClassificationsS592.367 .R43 2001
The Physical Object
Paginationxxii, 309 p. :
ID Numbers
Open LibraryOL3634678M
LC Control Number2002435250

«Back. Reclaimed Phosphate Clay Settling Area Investigation: Hydrologic Model Calibration and Ultimate Clay Elevation Prediction. Final. Presently operating phosphate mines in Florida have o acres of above ground clay settling areas (CSAs), with an additio acres designated for future CSAs.

HIGH VALUE CROP POTENTIAL OF RECLAIMED PHOSPHATIC CLAY SOIL1 by James A. Stricker2 Abstract. Phosphatic clay soil is a byproduct of phosphate mining. Approximatelyacres of phosphatic clay have been created in Florida. Clay is washed from phosphate ore and pumped, at about % solids, to settling areas.

Reclaimed Phosphate Clay Settling Area Investigation: Hydrologic Model Calibration and Ultimate Clay Elevation Prediction. Walter R. Reigner and Cornelis Winkler, III, BCI Engineers &. The clay-water mixture being pumped into a Clay Settling Area (CSA).

Large adjustable weirs allow water to be skimmed off but the consolidation of the clays take decades. While strip mined land must be reclaimed, the clay settling areas remain barren islands of waste with little ecological value.

Reclaimed phosphate clay settling area investigation: hydrologic model calibration and ultimate clay elevation prediction. Final report. Florida Reclaimed phosphate clay settling area investigation book of Phosphate Research: Bartow, FL. Reclaimed Phosphate Clay Settling Area Investigation: Hydrologic Model Calibration and Ultimate Clay Elevation Prediction.

Publication No.Florida Institute of Phosphate Research. Multiple-Use Landscapes for Reclaimed Phosphatic Clay Areas, addresses a number of beneficial land uses for clay settling areas (CSAs). Producing one ton of phosphate rock creates one ton of phosphatic clay by-product.

The Florida phosphate industry generates approximatelytons of phosphatic clay each day (El-Shall ). chapter 62c master reclamation plan for lands disturbed by the severance of phosphate prior to july 1, filed on october 10th,   Phosphate mining in Florida is open pit mining (see Fig.

1) where an overburden of approximately 10 m is stripped off and Reclaimed phosphate clay settling area investigation book aside and the clay/sand calcium phosphate matrix is removed.

1 During beneficiation, the calcium phosphate is separated from the sand and clay. The clays, now in a slurry mixture, are returned to the lands and stored in elevated clay settling areas that. The impacts of phosphate-mining on surface and groundwater resources in west central Florida, USA was the subject of a study conducted by Lewelling & Wylie 32 The background hydrologic characteristics and water quality of three unmined basins in the area were compared to mined and phosphate-mined and reclaimed basins.

Result indicated that the. The reclamation of waste clay settling ponds is a time consuming process because of the water retention properties of the clay materials.

Description Reclaimed phosphate clay settling area investigation FB2

The two most frequently used methods to reclaim a settling pond by the phosphate industry are dewatering by decanting and by capping the clays, i.e., pumping sand tailings onto the semi-liquid clays. Clay Settling Ponds—No matter what else is done, mining activities change the landform and leave clay settling ponds, which dominate the landscape.

While the engineering of clay settling ponds may have improved over time, they are still an environmental issue. They're full of waste that can be devastating if a leak or spill occurs. RECLAIMING PHOSPHATE-MINE CLAY SETTLING AREAS WITH FAST-GROWING TREES By Bijay Tamang August Chair: Donald L.

Rockwood Major Department: School of Forest Resources and Conservation Abandoned phosphate mines in central Florida are invaded by cogongrass (Imperata cylindrica).

Native vegetation in cogongrass-dominated areas is minimal or. SLMultiple-Use Landscapes: Reclaimed Phosphate Mined Lands, provides an overview of the range of landscapes created as a result of phosphate mining and reclamation in Florida.

SLLandscape Diversity: Multiple-Use Landscapes for Reclaimed Phosphatic Clay Areas, addresses a number of beneficial land uses for clay settling areas (CSAs). est, a clay settling area in the process of being reclaimed, and an active phos-phogypsum stack that is isolated from the watershed.

Upstream portions of the creek are mainly confined to a se-ries of ditches in land mined prior to any requirements for reclamation.

Halls Branch is a tributary to the North Prong of the Alafia River. The. Standing on a clay settling area's broad walls, on which trucks drive, it is difficult to imagine a breach.

But in the past, CSAs have burst. Before World War II, the clay. Clay Settling Areas (includes dam safety) The area lying between earthen dams or within excavated areas, which is used primarily for impounding clays or other wastes, sometimes also referred to as a “slime pond” or an “initial” or “waste-clay” settling area.

Clays are removed from the phosphate matrix during the beneficiation process. Phosphate and sand are separated, and the slurry (mixture of clay-sized particles and water) is pumped into CSAs. CSAs constitute about 40% of phosphate-mined lands (Brown, ). Slurry is 3–5% solids when pumped into a CSA, consolidates fairly quickly to 12–15%, and takes several years to settle and form a crust (50–60% solids) strong.

One such incident in killed over three million fish when 2 million US gallons (7, m 3) of phosphate waste swept into the river, causing an estimated 5-foot-tall ( m) tide of slime that spread into adjacent pastures and wetlands.

Since the spill, clay settling areas are now constructed as engineered dams. Chemical speciation determines Se solubility and therefore its bioavailability and potential for transport in the environment.

In this study we investigated the speciation of Se in soil developed on reclaimed mine sites in the U.S. Western Phosphate Resource Area (WPRA) using micro-X-ray absorption near-edge structure (μ-XANES) spectroscopy and micro-X-ray fluorescence (μ-XRF) mapping. 2 Reclaimed Stream Study April Introduction This investigation, a coop-erative study between FDEP’s Bu-reau of Mine Reclamation and Bu-reau of Laboratories, was conduct-ed to determine the biological suc-cess of stream reclamation or cre-ation efforts in phosphate mining areas.

Four of the oldest created streams ( 15 years), that had.

Details Reclaimed phosphate clay settling area investigation PDF

62C Definitions. filed on October 10th, Reclamation is the process of returning the land and water to a usable condition once mining has ceased. Because of the complete destruction that takes place during mining activities, the goal of reclamation is to bring the land back to a place that will allow natural processes to begin again.

Clay settling areas (CSAs) are waste products of phosphate mining in peninsular Florida. Phosphate-rich deposits cover much of peninsular Florida. Where mined, the phosphate-rich layer averages m in thickness and is buried beneath an overburden layer that is typically m in thickness.

The phosphate-rich layer is ~ % clay, ~   Clay settling areas are huge — as big as 80 acres and surrounded by berms as tall as 60 feet. They account for an estimated 40% of all previously mined land. And they take decades to stabilize.

The clay and sand get pumped back to the mine. At other mines, the slurried clay gets disposed in a reservoir called a Clay Settling Area. The sand gets pumped into the pit to fill it in.

When CF's existing mine was approved by Hardee County inthe county insisted it be reclaimed with an experimental sand/clay. Study area, locations of generalized hydrogeologic sections, and extent of mineable phosphate deposits in west-central Florida 2 2.

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Locations of basins and ROMP well 48 4 3. Location of phosphate-mined area, area permitted for future mining, and unpermitted area owned by phosphate companies 5 4. Physiography of the study area 6 5. Shop new, used, rare, and out-of-print books. Powell's is an independent bookstore based in Portland, Oregon.

Browse staff picks, author features, and more. Influence of fast growing trees on ecological restoration of clay settling areas in Polk County, Florida. Proc. Florida Academy of Sciences, March, Melbourne, FL. (abstract) Langholtz M, D Carter, J Alavalapati, and D Rockwood.

The economic feasibility of reclaiming phosphate mined lands with short-rotation woody crops in Florida. Clay Settling in Fresh and Salt Water 3 observedintheGirondeEstuary,France[1],theJiaojiangEstuary,China(Guanetal.

[11], Fig. 5), and in Kouchibouguac Bay, Canada [13], to name a few. Such trends in particle settling and sedimentation may be understood from the chemical behaviour of clay minerals.

Individual clay particles are plate. relate to its prior use as a phosphate strip mine. Concerns associated with reclaimed phosphate-mined lands which may preclude their futUre use for residential development include: 1) low soil shear strength and land subsidence characteristic of clay settling areas, 2) elevated radon emissions from tailings.— The provisions of this part apply to land subject to the mandatory reclamation obligation for the severance of solid mineral phosphate rock set forth in s.

(1) and to those lands which are initially used after July 1,as a clay settling area or a dam for use with a clay settling area. Such provisions do not apply to acres.TAMPA — A phosphate mine in Hillsborough County will be used as a dumping ground for up to 28 million tons of clay — a by-product of mining — from a new Mosaic operation in Hardee County.