phosphatic clay dewatering

Dewatering of soils at construction sites

silt, clay, organic material or precipitates in dewatering flows will not clog the recharge area -the dewatering fluid does not degrade soil or the quality of water resources -the discharge will not lead to local flooding or adverse land surface impacts. b. Recycling, provided the water quality is suitable for its intended use. Recycling Get price

State

They include the Estech sand-clay mix process using the Enviro-Clear thickener, sand-clay sandwiching, dredge mix, dredge process, and the sand-spray process. Developing technology for dewatering phosphatic clays also is described, including the Bureau of Mines rotary trommel method and the Gardinier process. Get price

Ecohydrologic Evaluation of Wetlands on Phosphatic Clay

The clay slurry that results from this process is only 2 5% solids and is transp orted to CSAs where the suspended clays dewater and settle (FIPR, 2008) Phosphatic clay consists of the following clay minerals, listed in descending order of abundance: smectite, palygorskite, illite, Get price

Phosphatic

State of the art of phosphatic clay dewatering technology and disposal techniques; Mining Process. Above-ground growth and radium-226 uptake of cover crops grown an phosphogypsum and phosphatic clay from a phosphate mine in north carolina; An evaluation of wetland habitat establishment and wildlife utilization in phosphate clay settling areas Get price

Accelerated Dewatering

A method called Accelerated Dewatering is being piloted to cost effectively, and with minimal energy input, separate process water from large volumes of fluid fine tailings. A tailings pond includes the water, sand, clay and residual oil that is left over after oil sands processing. Get price

Enhanced Electro

Mar 16, 2001Electrokinetic dewatering of phosphatic clay settling areas: numerical simulation and economic assessment. Mining, Metallurgy Exploration 2011, 28 (2), 71-76. DOI: 10.1007/BF03402390. J. P. McKinney, M. E. Orazem. A constitutive relationship for electrokinetic dewatering of phosphatic clay Get price

What is Dewatering, When is It Used, and Methods

Jan 31, 2018This is a dewatering process which can control pore water pressures in materials with low permeability characteristics, like slits or fissured clay. This method works via the venturi principle. In this case, high-pressure water circulates through eductors in each well, triggering a vacuum. Get price

Dewatering method and agent

Nov 16, 1993More effective dewatering methods are described in the U.S. Bureau of Mines Reports of Investigations, e.g., Investigation Nos. 8611 (Large-Scale Dewatering of Phosphatic Clay Waste from Central Florida), 8349 (Flocculation Dewatering of Florida Phosphatic Clay Wastes), and others. Get price

[19) [II] [4S] [54] MEmOD FOR DEWATERING PHOSPHATE

undesirable material in the ore, e.g., clay and sIica, accu- about I to 3. The addition of sulfuric acid results in the mulates in the form of an unsettable very fme suspension chemical dissolution of the phosphatic contents of the in th~ water. This ~ater is employed for washing and slime into Get price

Controlling Harmful Algal Blooms Through Clay Flocculation1

Results showed that the consolidation (dewatering) of the floc over time increased the critical shear velocity for resuspension (i.e. decrease erodibility). Furthermore, the inclusion of PAC increased floc erodibility, relative to the phosphatic clay alone, suggesting that PAC-addition created a Get price

Dewatering of Fine Particle Mining Wastes Using

Infield tests, phosphate clay waste has been dewatered from a nominal 2.5% solids to greater than 20% solids. In other field tests, coal-clay waste has been dewatered from a nominal 3% solids to greater than 55% solids. In addition, small-scale continuous tests have shown that bentonitic clays can be dewatered from 12% solids to 40% solids. Get price

Dewatering of Talc Slurry

phosphatic clay wastes produced during the mining and beneficiation of phosphate in Florida (2). It consists of illlxlng the clay wastes with a flocculant and de watering the resulting agglomerated mass, first on a static screen to remove most of the water, and then on a rotary screen for further dewatering. Get price

Dewatering Techniques for Construction Projects

Dec 06, 2019Dewatering can also refer to the process of removing water from the soil by wet classification. Wet classification is a construction process that looks at the size of particles that make up the underlying soil in a project site and the flow of fluids through those particles. Get price

State

The effective use of sand tailings is also encouraged to promote further consolidation of clays via self-weight stressing, sand/clay admixtures and/or surcharging sand caps. FIPR Publication No. 02-017-021 State-of-the-Art of Phosphatic Clay Dewatering and Disposal Techniques. Volume 1 – A Review of Phosphatic Clay Dewatering Research. W. E. Get price

Enhanced Electro

Mar 16, 2001Electrokinetic dewatering of phosphatic clay settling areas: numerical simulation and economic assessment. Mining, Metallurgy Exploration 2011, 28 (2), 71-76. DOI: 10.1007/BF03402390. J. P. McKinney, M. E. Orazem. A constitutive relationship for electrokinetic dewatering of phosphatic clay Get price

US20150273398A1

Various examples are provided for electrokinetic dewatering of e.g., phosphatic clay suspensions. In one example, among others, a system includes a separation chamber including an anode and a cathode extending ends of the separation chamber and a power supply configured to energize the anode and the cathode to establish an electric field. Get price

Dewatering and the hydraulic properties of soft, sulfidic

[4] The soils of interest here fall between the wet, model clay systems with moisture ratios [ratio of volume of water to volume of solid] around 30 [Smiles and Harvey, 1973; Smiles, 1976] and stiff clay soils with moisture ratios around 1 [Baumgartl and Horn, 1999].There are few measurements in the intermediate range. Kim et al. [1992a, 1992b] measured the hydraulic conductivity and moisture Get price

Dewatering of Soil

Jun 16, 2017VACUUM DEWATERING WELLS: The flow of water toward wells under gravity is available in relatively permeable soils. In case of fine sands, the permeability drop down to (10-4 ~10-6)which means capillary tension is enough to counteract gravity. Thus, water will not flow freely to wells. In this type of soil vacuum dewatering wells are required. Get price

SL229/SS449: Landscape Diversity: Multiple

As the phosphatic clay dewaters during the reclamation process (i.e., active use for mining purposes has ceased), the phosphatic clay undergoes subsidence or more appropriately differential settling. Dewatering starts with the slurry left after hydraulic deposition, which contains less than 5% solids. Get price

LOW

dewatering clay tailings from pebble phosphate mining and in reclaiming the waste clay ponds. Palygorskite seems to be unstable in most soil en- vironments and transforms to smectite (Bigham et al., 1980). Under laboratory conditions, palygorskite can easily be transformed to smectite at 150~ under al- Get price

Phosphate Mining and its Effect on the Environment

Jan 03, 2019The separated phosphate pebbles are moved through dewatering tanks and onto an inventory pile via conveyor belt. The clay particles are then pumped through pipelines into storage ponds (clay settling areas) where these particles sink to the bottom. Get price

Production of Summer Squash on Phosphatic Clays of Florida

SOIL PREPARATION Soil tillage is difficult in the clay, but is a key step in optimum vegetable production. Vegetables at the Mined Lands Center have benefitted from a cover crop of alfalfa prior to planting vegetables. The cover crop aids in dewatering the clay, adds organic matter to the clay, and provides nitrogen to the vegetable crop. Get price

Sand

Phosphatic Clay The phosphate ore layer, known as the matrix, is made up of nearly equal parts of sand, clay, and phosphate minerals. Physical separation, or beneficiation, of the components of the matrix results in large quantities of sand (tailings) and phosphatic clay, which are then returned for use in the mined landscapes. Get price

Semicontinuous Electrokinetic Dewatering of Clay Suspensions

The processing and storage of the phosphatic clay suspensions which result as a waste product from phosphate mining is a longstanding problem. A very long time is required for the gravity-driven settling of clay suspensions with an initial 2-3 wt% solids content, and decades may be required to reach the desired target of 25-30 wt% solids content. Get price

Design of Electrolytic Dewatering Systems for Phosphatic

Design of Electrolytic Dewatering Systems for Phosphatic Clay Suspensions . By James Mckinney. Abstract. In the series University of Florida Digital Collections.Includes vita.(Bibliography) Includes bibliographical references.(Source of Description) Description based on online resource; title from PDF title page.(Source of Description) This Get price

The Determination of Bound Water in Waste Phosphatic Clay

Phosphatic clay is a by-product of phosphate strip mining, particularly in Florida, USA. This waste material occupies about 100 000 acres of land which could be utilized for other causes. Thus, its use as an alternating cementing material for the addition into the mixing matrix of cement paste and concrete to yield higher strength would be profitable for both materials involved. Get price

A review of phosphatic clay dewatering research : Pittman

A review of phosphatic clay dewatering research Item Preview remove-circle Share or Embed This Item. EMBED. EMBED (for wordpress hosted blogs and archive item description tags) Want more? Advanced embedding details, examples, and help! No_Favorite. share Get price

HIGH VALUE CROP POTENTIAL OF RECLAIMED PHOSPHATIC

Phosphatic clay is a by-product of phosphate mining operations. Phosphate occurs in a matrix of sand, clay and phosphate ore. Clay is washed from the matrix in the beneficiation process and pumped to large settling areas at 3 to 5% solids at a rate of 20,000 to 80,000 gpm. Individual settling areas vary in size from around 300 to 800 acres. The Get price

Clay Settling Ponds

They are suspended in a watery slurry, and pumped to large impoundment areas known as clay settling areas for natural settling. This clay is referred to as phosphatic clay. A typical Florida phosphate mining operation pumps more than 100,000 gallons of water carrying tiny particles of clay every minute. Get price